Commit 098297b2 authored by Jeff Mahoney's avatar Jeff Mahoney Committed by Jan Kara

reiserfs: cleanup, reformat comments to normal kernel style

This patch reformats comments in the reiserfs code to fit in 80 columns and
to follow the style rules.

There is no functional change but it helps make my eyes bleed less.
Signed-off-by: default avatarJeff Mahoney <jeffm@suse.com>
Signed-off-by: default avatarJan Kara <jack@suse.cz>
parent 4cf5f7ad
This diff is collapsed.
...@@ -59,7 +59,10 @@ static inline bool is_privroot_deh(struct inode *dir, struct reiserfs_de_head *d ...@@ -59,7 +59,10 @@ static inline bool is_privroot_deh(struct inode *dir, struct reiserfs_de_head *d
int reiserfs_readdir_inode(struct inode *inode, struct dir_context *ctx) int reiserfs_readdir_inode(struct inode *inode, struct dir_context *ctx)
{ {
struct cpu_key pos_key; /* key of current position in the directory (key of directory entry) */
/* key of current position in the directory (key of directory entry) */
struct cpu_key pos_key;
INITIALIZE_PATH(path_to_entry); INITIALIZE_PATH(path_to_entry);
struct buffer_head *bh; struct buffer_head *bh;
int item_num, entry_num; int item_num, entry_num;
...@@ -77,21 +80,28 @@ int reiserfs_readdir_inode(struct inode *inode, struct dir_context *ctx) ...@@ -77,21 +80,28 @@ int reiserfs_readdir_inode(struct inode *inode, struct dir_context *ctx)
reiserfs_check_lock_depth(inode->i_sb, "readdir"); reiserfs_check_lock_depth(inode->i_sb, "readdir");
/* form key for search the next directory entry using f_pos field of /*
file structure */ * form key for search the next directory entry using
* f_pos field of file structure
*/
make_cpu_key(&pos_key, inode, ctx->pos ?: DOT_OFFSET, TYPE_DIRENTRY, 3); make_cpu_key(&pos_key, inode, ctx->pos ?: DOT_OFFSET, TYPE_DIRENTRY, 3);
next_pos = cpu_key_k_offset(&pos_key); next_pos = cpu_key_k_offset(&pos_key);
path_to_entry.reada = PATH_READA; path_to_entry.reada = PATH_READA;
while (1) { while (1) {
research: research:
/* search the directory item, containing entry with specified key */ /*
* search the directory item, containing entry with
* specified key
*/
search_res = search_res =
search_by_entry_key(inode->i_sb, &pos_key, &path_to_entry, search_by_entry_key(inode->i_sb, &pos_key, &path_to_entry,
&de); &de);
if (search_res == IO_ERROR) { if (search_res == IO_ERROR) {
// FIXME: we could just skip part of directory which could /*
// not be read * FIXME: we could just skip part of directory
* which could not be read
*/
ret = -EIO; ret = -EIO;
goto out; goto out;
} }
...@@ -109,14 +119,20 @@ int reiserfs_readdir_inode(struct inode *inode, struct dir_context *ctx) ...@@ -109,14 +119,20 @@ int reiserfs_readdir_inode(struct inode *inode, struct dir_context *ctx)
"vs-9005 item_num == %d, item amount == %d", "vs-9005 item_num == %d, item amount == %d",
item_num, B_NR_ITEMS(bh)); item_num, B_NR_ITEMS(bh));
/* and entry must be not more than number of entries in the item */ /*
* and entry must be not more than number of entries
* in the item
*/
RFALSE(ih_entry_count(ih) < entry_num, RFALSE(ih_entry_count(ih) < entry_num,
"vs-9010: entry number is too big %d (%d)", "vs-9010: entry number is too big %d (%d)",
entry_num, ih_entry_count(ih)); entry_num, ih_entry_count(ih));
/*
* go through all entries in the directory item beginning
* from the entry, that has been found
*/
if (search_res == POSITION_FOUND if (search_res == POSITION_FOUND
|| entry_num < ih_entry_count(ih)) { || entry_num < ih_entry_count(ih)) {
/* go through all entries in the directory item beginning from the entry, that has been found */
struct reiserfs_de_head *deh = struct reiserfs_de_head *deh =
B_I_DEH(bh, ih) + entry_num; B_I_DEH(bh, ih) + entry_num;
...@@ -127,16 +143,18 @@ int reiserfs_readdir_inode(struct inode *inode, struct dir_context *ctx) ...@@ -127,16 +143,18 @@ int reiserfs_readdir_inode(struct inode *inode, struct dir_context *ctx)
ino_t d_ino; ino_t d_ino;
loff_t cur_pos = deh_offset(deh); loff_t cur_pos = deh_offset(deh);
/* it is hidden entry */
if (!de_visible(deh)) if (!de_visible(deh))
/* it is hidden entry */
continue; continue;
d_reclen = entry_length(bh, ih, entry_num); d_reclen = entry_length(bh, ih, entry_num);
d_name = B_I_DEH_ENTRY_FILE_NAME(bh, ih, deh); d_name = B_I_DEH_ENTRY_FILE_NAME(bh, ih, deh);
if (d_reclen <= 0 || if (d_reclen <= 0 ||
d_name + d_reclen > bh->b_data + bh->b_size) { d_name + d_reclen > bh->b_data + bh->b_size) {
/* There is corrupted data in entry, /*
* We'd better stop here */ * There is corrupted data in entry,
* We'd better stop here
*/
pathrelse(&path_to_entry); pathrelse(&path_to_entry);
ret = -EIO; ret = -EIO;
goto out; goto out;
...@@ -145,10 +163,10 @@ int reiserfs_readdir_inode(struct inode *inode, struct dir_context *ctx) ...@@ -145,10 +163,10 @@ int reiserfs_readdir_inode(struct inode *inode, struct dir_context *ctx)
if (!d_name[d_reclen - 1]) if (!d_name[d_reclen - 1])
d_reclen = strlen(d_name); d_reclen = strlen(d_name);
/* too big to send back to VFS */
if (d_reclen > if (d_reclen >
REISERFS_MAX_NAME(inode->i_sb-> REISERFS_MAX_NAME(inode->i_sb->
s_blocksize)) { s_blocksize)) {
/* too big to send back to VFS */
continue; continue;
} }
...@@ -173,10 +191,14 @@ int reiserfs_readdir_inode(struct inode *inode, struct dir_context *ctx) ...@@ -173,10 +191,14 @@ int reiserfs_readdir_inode(struct inode *inode, struct dir_context *ctx)
goto research; goto research;
} }
} }
// Note, that we copy name to user space via temporary
// buffer (local_buf) because filldir will block if /*
// user space buffer is swapped out. At that time * Note, that we copy name to user space via
// entry can move to somewhere else * temporary buffer (local_buf) because
* filldir will block if user space buffer is
* swapped out. At that time entry can move to
* somewhere else
*/
memcpy(local_buf, d_name, d_reclen); memcpy(local_buf, d_name, d_reclen);
/* /*
...@@ -209,22 +231,26 @@ int reiserfs_readdir_inode(struct inode *inode, struct dir_context *ctx) ...@@ -209,22 +231,26 @@ int reiserfs_readdir_inode(struct inode *inode, struct dir_context *ctx)
} /* for */ } /* for */
} }
/* end of directory has been reached */
if (item_num != B_NR_ITEMS(bh) - 1) if (item_num != B_NR_ITEMS(bh) - 1)
// end of directory has been reached
goto end; goto end;
/* item we went through is last item of node. Using right /*
delimiting key check is it directory end */ * item we went through is last item of node. Using right
* delimiting key check is it directory end
*/
rkey = get_rkey(&path_to_entry, inode->i_sb); rkey = get_rkey(&path_to_entry, inode->i_sb);
if (!comp_le_keys(rkey, &MIN_KEY)) { if (!comp_le_keys(rkey, &MIN_KEY)) {
/* set pos_key to key, that is the smallest and greater /*
that key of the last entry in the item */ * set pos_key to key, that is the smallest and greater
* that key of the last entry in the item
*/
set_cpu_key_k_offset(&pos_key, next_pos); set_cpu_key_k_offset(&pos_key, next_pos);
continue; continue;
} }
/* end of directory has been reached */
if (COMP_SHORT_KEYS(rkey, &pos_key)) { if (COMP_SHORT_KEYS(rkey, &pos_key)) {
// end of directory has been reached
goto end; goto end;
} }
...@@ -248,9 +274,10 @@ static int reiserfs_readdir(struct file *file, struct dir_context *ctx) ...@@ -248,9 +274,10 @@ static int reiserfs_readdir(struct file *file, struct dir_context *ctx)
return reiserfs_readdir_inode(file_inode(file), ctx); return reiserfs_readdir_inode(file_inode(file), ctx);
} }
/* compose directory item containing "." and ".." entries (entries are /*
not aligned to 4 byte boundary) */ * compose directory item containing "." and ".." entries (entries are
/* the last four params are LE */ * not aligned to 4 byte boundary)
*/
void make_empty_dir_item_v1(char *body, __le32 dirid, __le32 objid, void make_empty_dir_item_v1(char *body, __le32 dirid, __le32 objid,
__le32 par_dirid, __le32 par_objid) __le32 par_dirid, __le32 par_objid)
{ {
......
This diff is collapsed.
...@@ -15,20 +15,20 @@ ...@@ -15,20 +15,20 @@
#include <linux/quotaops.h> #include <linux/quotaops.h>
/* /*
** We pack the tails of files on file close, not at the time they are written. * We pack the tails of files on file close, not at the time they are written.
** This implies an unnecessary copy of the tail and an unnecessary indirect item * This implies an unnecessary copy of the tail and an unnecessary indirect item
** insertion/balancing, for files that are written in one write. * insertion/balancing, for files that are written in one write.
** It avoids unnecessary tail packings (balances) for files that are written in * It avoids unnecessary tail packings (balances) for files that are written in
** multiple writes and are small enough to have tails. * multiple writes and are small enough to have tails.
** *
** file_release is called by the VFS layer when the file is closed. If * file_release is called by the VFS layer when the file is closed. If
** this is the last open file descriptor, and the file * this is the last open file descriptor, and the file
** small enough to have a tail, and the tail is currently in an * small enough to have a tail, and the tail is currently in an
** unformatted node, the tail is converted back into a direct item. * unformatted node, the tail is converted back into a direct item.
** *
** We use reiserfs_truncate_file to pack the tail, since it already has * We use reiserfs_truncate_file to pack the tail, since it already has
** all the conditions coded. * all the conditions coded.
*/ */
static int reiserfs_file_release(struct inode *inode, struct file *filp) static int reiserfs_file_release(struct inode *inode, struct file *filp)
{ {
...@@ -57,14 +57,16 @@ static int reiserfs_file_release(struct inode *inode, struct file *filp) ...@@ -57,14 +57,16 @@ static int reiserfs_file_release(struct inode *inode, struct file *filp)
} }
reiserfs_write_lock(inode->i_sb); reiserfs_write_lock(inode->i_sb);
/* freeing preallocation only involves relogging blocks that /*
* freeing preallocation only involves relogging blocks that
* are already in the current transaction. preallocation gets * are already in the current transaction. preallocation gets
* freed at the end of each transaction, so it is impossible for * freed at the end of each transaction, so it is impossible for
* us to log any additional blocks (including quota blocks) * us to log any additional blocks (including quota blocks)
*/ */
err = journal_begin(&th, inode->i_sb, 1); err = journal_begin(&th, inode->i_sb, 1);
if (err) { if (err) {
/* uh oh, we can't allow the inode to go away while there /*
* uh oh, we can't allow the inode to go away while there
* is still preallocation blocks pending. Try to join the * is still preallocation blocks pending. Try to join the
* aborted transaction * aborted transaction
*/ */
...@@ -72,11 +74,13 @@ static int reiserfs_file_release(struct inode *inode, struct file *filp) ...@@ -72,11 +74,13 @@ static int reiserfs_file_release(struct inode *inode, struct file *filp)
err = journal_join_abort(&th, inode->i_sb, 1); err = journal_join_abort(&th, inode->i_sb, 1);
if (err) { if (err) {
/* hmpf, our choices here aren't good. We can pin the inode /*
* which will disallow unmount from every happening, we can * hmpf, our choices here aren't good. We can pin
* do nothing, which will corrupt random memory on unmount, * the inode which will disallow unmount from ever
* or we can forcibly remove the file from the preallocation * happening, we can do nothing, which will corrupt
* list, which will leak blocks on disk. Lets pin the inode * random memory on unmount, or we can forcibly
* remove the file from the preallocation list, which
* will leak blocks on disk. Lets pin the inode
* and let the admin know what is going on. * and let the admin know what is going on.
*/ */
igrab(inode); igrab(inode);
...@@ -102,10 +106,12 @@ static int reiserfs_file_release(struct inode *inode, struct file *filp) ...@@ -102,10 +106,12 @@ static int reiserfs_file_release(struct inode *inode, struct file *filp)
(REISERFS_I(inode)->i_flags & i_pack_on_close_mask) && (REISERFS_I(inode)->i_flags & i_pack_on_close_mask) &&
tail_has_to_be_packed(inode)) { tail_has_to_be_packed(inode)) {
/* if regular file is released by last holder and it has been /*
appended (we append by unformatted node only) or its direct * if regular file is released by last holder and it has been
item(s) had to be converted, then it may have to be * appended (we append by unformatted node only) or its direct
indirect2direct converted */ * item(s) had to be converted, then it may have to be
* indirect2direct converted
*/
err = reiserfs_truncate_file(inode, 0); err = reiserfs_truncate_file(inode, 0);
} }
out: out:
...@@ -117,8 +123,9 @@ static int reiserfs_file_release(struct inode *inode, struct file *filp) ...@@ -117,8 +123,9 @@ static int reiserfs_file_release(struct inode *inode, struct file *filp)
static int reiserfs_file_open(struct inode *inode, struct file *file) static int reiserfs_file_open(struct inode *inode, struct file *file)
{ {
int err = dquot_file_open(inode, file); int err = dquot_file_open(inode, file);
/* somebody might be tailpacking on final close; wait for it */
if (!atomic_inc_not_zero(&REISERFS_I(inode)->openers)) { if (!atomic_inc_not_zero(&REISERFS_I(inode)->openers)) {
/* somebody might be tailpacking on final close; wait for it */
mutex_lock(&(REISERFS_I(inode)->tailpack)); mutex_lock(&(REISERFS_I(inode)->tailpack));
atomic_inc(&REISERFS_I(inode)->openers); atomic_inc(&REISERFS_I(inode)->openers);
mutex_unlock(&(REISERFS_I(inode)->tailpack)); mutex_unlock(&(REISERFS_I(inode)->tailpack));
...@@ -208,7 +215,8 @@ int reiserfs_commit_page(struct inode *inode, struct page *page, ...@@ -208,7 +215,8 @@ int reiserfs_commit_page(struct inode *inode, struct page *page,
journal_mark_dirty(&th, s, bh); journal_mark_dirty(&th, s, bh);
} else if (!buffer_dirty(bh)) { } else if (!buffer_dirty(bh)) {
mark_buffer_dirty(bh); mark_buffer_dirty(bh);
/* do data=ordered on any page past the end /*
* do data=ordered on any page past the end
* of file and any buffer marked BH_New. * of file and any buffer marked BH_New.
*/ */
if (reiserfs_data_ordered(inode->i_sb) && if (reiserfs_data_ordered(inode->i_sb) &&
......
This diff is collapsed.
...@@ -12,12 +12,6 @@ ...@@ -12,12 +12,6 @@
* Yura's function is added (04/07/2000) * Yura's function is added (04/07/2000)
*/ */
//
// keyed_hash
// yura_hash
// r5_hash
//
#include <linux/kernel.h> #include <linux/kernel.h>
#include "reiserfs.h" #include "reiserfs.h"
#include <asm/types.h> #include <asm/types.h>
...@@ -56,7 +50,7 @@ u32 keyed_hash(const signed char *msg, int len) ...@@ -56,7 +50,7 @@ u32 keyed_hash(const signed char *msg, int len)
u32 pad; u32 pad;
int i; int i;
// assert(len >= 0 && len < 256); /* assert(len >= 0 && len < 256); */
pad = (u32) len | ((u32) len << 8); pad = (u32) len | ((u32) len << 8);
pad |= pad << 16; pad |= pad << 16;
...@@ -127,9 +121,10 @@ u32 keyed_hash(const signed char *msg, int len) ...@@ -127,9 +121,10 @@ u32 keyed_hash(const signed char *msg, int len)
return h0 ^ h1; return h0 ^ h1;
} }
/* What follows in this file is copyright 2000 by Hans Reiser, and the /*
* licensing of what follows is governed by reiserfs/README */ * What follows in this file is copyright 2000 by Hans Reiser, and the
* licensing of what follows is governed by reiserfs/README
*/
u32 yura_hash(const signed char *msg, int len) u32 yura_hash(const signed char *msg, int len)
{ {
int j, pow; int j, pow;
......
This diff is collapsed.
This diff is collapsed.
...@@ -15,7 +15,8 @@ ...@@ -15,7 +15,8 @@
* reiserfs_ioctl - handler for ioctl for inode * reiserfs_ioctl - handler for ioctl for inode
* supported commands: * supported commands:
* 1) REISERFS_IOC_UNPACK - try to unpack tail from direct item into indirect * 1) REISERFS_IOC_UNPACK - try to unpack tail from direct item into indirect
* and prevent packing file (argument arg has to be non-zero) * and prevent packing file (argument arg has t
* be non-zero)
* 2) REISERFS_IOC_[GS]ETFLAGS, REISERFS_IOC_[GS]ETVERSION * 2) REISERFS_IOC_[GS]ETFLAGS, REISERFS_IOC_[GS]ETVERSION
* 3) That's all for a while ... * 3) That's all for a while ...
*/ */
...@@ -132,7 +133,10 @@ long reiserfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) ...@@ -132,7 +133,10 @@ long reiserfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
long reiserfs_compat_ioctl(struct file *file, unsigned int cmd, long reiserfs_compat_ioctl(struct file *file, unsigned int cmd,
unsigned long arg) unsigned long arg)
{ {
/* These are just misnamed, they actually get/put from/to user an int */ /*
* These are just misnamed, they actually
* get/put from/to user an int
*/
switch (cmd) { switch (cmd) {
case REISERFS_IOC32_UNPACK: case REISERFS_IOC32_UNPACK:
cmd = REISERFS_IOC_UNPACK; cmd = REISERFS_IOC_UNPACK;
...@@ -160,10 +164,10 @@ long reiserfs_compat_ioctl(struct file *file, unsigned int cmd, ...@@ -160,10 +164,10 @@ long reiserfs_compat_ioctl(struct file *file, unsigned int cmd,
int reiserfs_commit_write(struct file *f, struct page *page, int reiserfs_commit_write(struct file *f, struct page *page,
unsigned from, unsigned to); unsigned from, unsigned to);
/* /*
** reiserfs_unpack * reiserfs_unpack
** Function try to convert tail from direct item into indirect. * Function try to convert tail from direct item into indirect.
** It set up nopack attribute in the REISERFS_I(inode)->nopack * It set up nopack attribute in the REISERFS_I(inode)->nopack
*/ */
int reiserfs_unpack(struct inode *inode, struct file *filp) int reiserfs_unpack(struct inode *inode, struct file *filp)
{ {
int retval = 0; int retval = 0;
...@@ -194,9 +198,10 @@ int reiserfs_unpack(struct inode *inode, struct file *filp) ...@@ -194,9 +198,10 @@ int reiserfs_unpack(struct inode *inode, struct file *filp)
goto out; goto out;
} }
/* we unpack by finding the page with the tail, and calling /*
** __reiserfs_write_begin on that page. This will force a * we unpack by finding the page with the tail, and calling
** reiserfs_get_block to unpack the tail for us. * __reiserfs_write_begin on that page. This will force a
* reiserfs_get_block to unpack the tail for us.
*/ */
index = inode->i_size >> PAGE_CACHE_SHIFT; index = inode->i_size >> PAGE_CACHE_SHIFT;
mapping = inode->i_mapping; mapping = inode->i_mapping;
......
...@@ -5,15 +5,17 @@ ...@@ -5,15 +5,17 @@
#include <linux/time.h> #include <linux/time.h>
#include "reiserfs.h" #include "reiserfs.h"
// this contains item handlers for old item types: sd, direct, /*
// indirect, directory * this contains item handlers for old item types: sd, direct,
* indirect, directory
*/
/* and where are the comments? how about saying where we can find an /*
explanation of each item handler method? -Hans */ * and where are the comments? how about saying where we can find an
* explanation of each item handler method? -Hans
*/
////////////////////////////////////////////////////////////////////////////// /* stat data functions */
// stat data functions
//
static int sd_bytes_number(struct item_head *ih, int block_size) static int sd_bytes_number(struct item_head *ih, int block_size)
{ {
return 0; return 0;
...@@ -60,7 +62,7 @@ static void sd_print_item(struct item_head *ih, char *item) ...@@ -60,7 +62,7 @@ static void sd_print_item(struct item_head *ih, char *item)
static void sd_check_item(struct item_head *ih, char *item) static void sd_check_item(struct item_head *ih, char *item)
{ {
// FIXME: type something here! /* unused */
} }
static int sd_create_vi(struct virtual_node *vn, static int sd_create_vi(struct virtual_node *vn,
...@@ -68,7 +70,6 @@ static int sd_create_vi(struct virtual_node *vn, ...@@ -68,7 +70,6 @@ static int sd_create_vi(struct virtual_node *vn,
int is_affected, int insert_size) int is_affected, int insert_size)
{ {
vi->vi_index = TYPE_STAT_DATA; vi->vi_index = TYPE_STAT_DATA;
//vi->vi_type |= VI_TYPE_STAT_DATA;// not needed?
return 0; return 0;
} }
...@@ -117,15 +118,13 @@ static struct item_operations stat_data_ops = { ...@@ -117,15 +118,13 @@ static struct item_operations stat_data_ops = {
.print_vi = sd_print_vi .print_vi = sd_print_vi
}; };
////////////////////////////////////////////////////////////////////////////// /* direct item functions */
// direct item functions
//
static int direct_bytes_number(struct item_head *ih, int block_size) static int direct_bytes_number(struct item_head *ih, int block_size)
{ {
return ih_item_len(ih); return ih_item_len(ih);
} }
// FIXME: this should probably switch to indirect as well /* FIXME: this should probably switch to indirect as well */
static void direct_decrement_key(struct cpu_key *key) static void direct_decrement_key(struct cpu_key *key)
{ {
cpu_key_k_offset_dec(key); cpu_key_k_offset_dec(key);
...@@ -144,7 +143,7 @@ static void direct_print_item(struct item_head *ih, char *item) ...@@ -144,7 +143,7 @@ static void direct_print_item(struct item_head *ih, char *item)
{ {
int j = 0; int j = 0;
// return; /* return; */
printk("\""); printk("\"");
while (j < ih_item_len(ih)) while (j < ih_item_len(ih))
printk("%c", item[j++]); printk("%c", item[j++]);
...@@ -153,7 +152,7 @@ static void direct_print_item(struct item_head *ih, char *item) ...@@ -153,7 +152,7 @@ static void direct_print_item(struct item_head *ih, char *item)
static void direct_check_item(struct item_head *ih, char *item) static void direct_check_item(struct item_head *ih, char *item)
{ {
// FIXME: type something here! /* unused */
} }
static int direct_create_vi(struct virtual_node *vn, static int direct_create_vi(struct virtual_node *vn,
...@@ -161,7 +160,6 @@ static int direct_create_vi(struct virtual_node *vn, ...@@ -161,7 +160,6 @@ static int direct_create_vi(struct virtual_node *vn,
int is_affected, int insert_size) int is_affected, int insert_size)
{ {
vi->vi_index = TYPE_DIRECT; vi->vi_index = TYPE_DIRECT;
//vi->vi_type |= VI_TYPE_DIRECT;
return 0; return 0;
} }
...@@ -211,16 +209,13 @@ static struct item_operations direct_ops = { ...@@ -211,16 +209,13 @@ static struct item_operations direct_ops = {
.print_vi = direct_print_vi .print_vi = direct_print_vi
}; };
////////////////////////////////////////////////////////////////////////////// /* indirect item functions */
// indirect item functions
//
static int indirect_bytes_number(struct item_head *ih, int block_size) static int indirect_bytes_number(struct item_head *ih, int block_size)
{ {
return ih_item_len(ih) / UNFM_P_SIZE * block_size; //- get_ih_free_space (ih); return ih_item_len(ih) / UNFM_P_SIZE * block_size;
} }
// decrease offset, if it becomes 0, change type to stat data /* decrease offset, if it becomes 0, change type to stat data */
static void indirect_decrement_key(struct cpu_key *key) static void indirect_decrement_key(struct cpu_key *key)
{ {
cpu_key_k_offset_dec(key); cpu_key_k_offset_dec(key);
...@@ -228,7 +223,7 @@ static void indirect_decrement_key(struct cpu_key *key) ...@@ -228,7 +223,7 @@ static void indirect_decrement_key(struct cpu_key *key)
set_cpu_key_k_type(key, TYPE_STAT_DATA); set_cpu_key_k_type(key, TYPE_STAT_DATA);
} }
// if it is not first item of the body, then it is mergeable /* if it is not first item of the body, then it is mergeable */
static int indirect_is_left_mergeable(struct reiserfs_key *key, static int indirect_is_left_mergeable(struct reiserfs_key *key,
unsigned long bsize) unsigned long bsize)
{ {
...@@ -236,7 +231,7 @@ static int indirect_is_left_mergeable(struct reiserfs_key *key, ...@@ -236,7 +231,7 @@ static int indirect_is_left_mergeable(struct reiserfs_key *key,
return (le_key_k_offset(version, key) != 1); return (le_key_k_offset(version, key) != 1);
} }
// printing of indirect item /* printing of indirect item */
static void start_new_sequence(__u32 * start, int *len, __u32 new) static void start_new_sequence(__u32 * start, int *len, __u32 new)
{ {
*start = new; *start = new;
...@@ -295,7 +290,7 @@ static void indirect_print_item(struct item_head *ih, char *item) ...@@ -295,7 +290,7 @@ static void indirect_print_item(struct item_head *ih, char *item)
static void indirect_check_item(struct item_head *ih, char *item) static void indirect_check_item(struct item_head *ih, char *item)
{ {
// FIXME: type something here! /* unused */
} }
static int indirect_create_vi(struct virtual_node *vn, static int indirect_create_vi(struct virtual_node *vn,
...@@ -303,7 +298,6 @@ static int indirect_create_vi(struct virtual_node *vn, ...@@ -303,7 +298,6 @@ static int indirect_create_vi(struct virtual_node *vn,
int is_affected, int insert_size) int is_affected, int insert_size)
{ {
vi->vi_index = TYPE_INDIRECT; vi->vi_index = TYPE_INDIRECT;
//vi->vi_type |= VI_TYPE_INDIRECT;
return 0; return 0;
} }
...@@ -321,16 +315,19 @@ static int indirect_check_right(struct virtual_item *vi, int free) ...@@ -321,16 +315,19 @@ static int indirect_check_right(struct virtual_item *vi, int free)
return indirect_check_left(vi, free, 0, 0); return indirect_check_left(vi, free, 0, 0);
} }
// return size in bytes of 'units' units. If first == 0 - calculate from the head (left), otherwise - from tail (right) /*
* return size in bytes of 'units' units. If first == 0 - calculate
* from the head (left), otherwise - from tail (right)
*/
static int indirect_part_size(struct virtual_item *vi, int first, int units) static int indirect_part_size(struct virtual_item *vi, int first, int units)
{ {
// unit of indirect item is byte (yet) /* unit of indirect item is byte (yet) */
return units; return units;
} }
static int indirect_unit_num(struct virtual_item *vi) static int indirect_unit_num(struct virtual_item *vi)
{ {
// unit of indirect item is byte (yet) /* unit of indirect item is byte (yet) */
return vi->vi_item_len - IH_SIZE; return vi->vi_item_len - IH_SIZE;
} }
...@@ -356,10 +353,7 @@ static struct item_operations indirect_ops = { ...@@ -356,10 +353,7 @@ static struct item_operations indirect_ops = {
.print_vi = indirect_print_vi .print_vi = indirect_print_vi
}; };
////////////////////////////////////////////////////////////////////////////// /* direntry functions */
// direntry functions
//
static int direntry_bytes_number(struct item_head *ih, int block_size) static int direntry_bytes_number(struct item_head *ih, int block_size)
{ {
reiserfs_warning(NULL, "vs-16090", reiserfs_warning(NULL, "vs-16090",
...@@ -428,7 +422,7 @@ static void direntry_check_item(struct item_head *ih, char *item) ...@@ -428,7 +422,7 @@ static void direntry_check_item(struct item_head *ih, char *item)
int i; int i;
struct reiserfs_de_head *deh; struct reiserfs_de_head *deh;
// FIXME: type something here! /* unused */
deh = (struct reiserfs_de_head *)item; deh = (struct reiserfs_de_head *)item;
for (i = 0; i < ih_entry_count(ih); i++, deh++) { for (i = 0; i < ih_entry_count(ih); i++, deh++) {
; ;
...@@ -439,7 +433,8 @@ static void direntry_check_item(struct item_head *ih, char *item) ...@@ -439,7 +433,8 @@ static void direntry_check_item(struct item_head *ih, char *item)
/* /*
* function returns old entry number in directory item in real node * function returns old entry number in directory item in real node
* using new entry number in virtual item in virtual node */ * using new entry number in virtual item in virtual node
*/
static inline int old_entry_num(int is_affected, int virtual_entry_num, static inline int old_entry_num(int is_affected, int virtual_entry_num,
int pos_in_item, int mode) int pos_in_item, int mode)
{ {
...@@ -463,9 +458,11 @@ static inline int old_entry_num(int is_affected, int virtual_entry_num, ...@@ -463,9 +458,11 @@ static inline int old_entry_num(int is_affected, int virtual_entry_num,
return virtual_entry_num - 1; return virtual_entry_num - 1;
} }
/* Create an array of sizes of directory entries for virtual /*
item. Return space used by an item. FIXME: no control over * Create an array of sizes of directory entries for virtual
consuming of space used by this item handler */ * item. Return space used by an item. FIXME: no control over
* consuming of space used by this item handler
*/
static int direntry_create_vi(struct virtual_node *vn, static int direntry_create_vi(struct virtual_node *vn,
struct virtual_item *vi, struct virtual_item *vi,
int is_affected, int insert_size) int is_affected, int insert_size)
...@@ -529,10 +526,10 @@ static int direntry_create_vi(struct virtual_node *vn, ...@@ -529,10 +526,10 @@ static int direntry_create_vi(struct virtual_node *vn,
} }
// /*
// return number of entries which may fit into specified amount of * return number of entries which may fit into specified amount of
// free space, or -1 if free space is not enough even for 1 entry * free space, or -1 if free space is not enough even for 1 entry
// */
static int direntry_check_left(struct virtual_item *vi, int free, static int direntry_check_left(struct virtual_item *vi, int free,
int start_skip, int end_skip) int start_skip, int end_skip)
{ {
...@@ -541,8 +538,8 @@ static int direntry_check_left(struct virtual_item *vi, int free, ...@@ -541,8 +538,8 @@ static int direntry_check_left(struct virtual_item *vi, int free,
struct direntry_uarea *dir_u = vi->vi_uarea; struct direntry_uarea *dir_u = vi->vi_uarea;
for (i = start_skip; i < dir_u->entry_count - end_skip; i++) { for (i = start_skip; i < dir_u->entry_count - end_skip; i++) {
/* i-th entry doesn't fit into the remaining free space */
if (dir_u->entry_sizes[i] > free) if (dir_u->entry_sizes[i] > free)
/* i-th entry doesn't fit into the remaining free space */
break; break;
free -= dir_u->entry_sizes[i]; free -= dir_u->entry_sizes[i];
...@@ -570,8 +567,8 @@ static int direntry_check_right(struct virtual_item *vi, int free) ...@@ -570,8 +567,8 @@ static int direntry_check_right(struct virtual_item *vi, int free)
struct direntry_uarea *dir_u = vi->vi_uarea; struct direntry_uarea *dir_u = vi->vi_uarea;
for (i = dir_u->entry_count - 1; i >= 0; i--) { for (i = dir_u->entry_count - 1; i >= 0; i--) {
/* i-th entry doesn't fit into the remaining free space */
if (dir_u->entry_sizes[i] > free) if (dir_u->entry_sizes[i] > free)
/* i-th entry doesn't fit into the remaining free space */
break; break;
free -= dir_u->entry_sizes[i]; free -= dir_u->entry_sizes[i];
...@@ -643,9 +640,7 @@ static struct item_operations direntry_ops = { ...@@ -643,9 +640,7 @@ static struct item_operations direntry_ops = {
.print_vi = direntry_print_vi .print_vi = direntry_print_vi
}; };
////////////////////////////////////////////////////////////////////////////// /* Error catching functions to catch errors caused by incorrect item types. */
// Error catching functions to catch errors caused by incorrect item types.
//
static int errcatch_bytes_number(struct item_head *ih, int block_size) static int errcatch_bytes_number(struct item_head *ih, int block_size)
{ {
reiserfs_warning(NULL, "green-16001", reiserfs_warning(NULL, "green-16001",
...@@ -685,8 +680,12 @@ static int errcatch_create_vi(struct virtual_node *vn, ...@@ -685,8 +680,12 @@ static int errcatch_create_vi(struct virtual_node *vn,
{ {
reiserfs_warning(NULL, "green-16006", reiserfs_warning(NULL, "green-16006",
"Invalid item type observed, run fsck ASAP"); "Invalid item type observed, run fsck ASAP");
return 0; // We might return -1 here as well, but it won't help as create_virtual_node() from where /*
// this operation is called from is of return type void. * We might return -1 here as well, but it won't help as
* create_virtual_node() from where this operation is called
* from is of return type void.
*/
return 0;
} }
static int errcatch_check_left(struct virtual_item *vi, int free, static int errcatch_check_left(struct virtual_item *vi, int free,
...@@ -739,9 +738,6 @@ static struct item_operations errcatch_ops = { ...@@ -739,9 +738,6 @@ static struct item_operations errcatch_ops = {
errcatch_print_vi errcatch_print_vi
}; };
//////////////////////////////////////////////////////////////////////////////
//
//
#if ! (TYPE_STAT_DATA == 0 && TYPE_INDIRECT == 1 && TYPE_DIRECT == 2 && TYPE_DIRENTRY == 3) #if ! (TYPE_STAT_DATA == 0 && TYPE_INDIRECT == 1 && TYPE_DIRECT == 2 && TYPE_DIRENTRY == 3)
#error Item types must use disk-format assigned values. #error Item types must use disk-format assigned values.
#endif #endif
......
This diff is collapsed.
This diff is collapsed.
This diff is collapsed.
...@@ -7,7 +7,7 @@ ...@@ -7,7 +7,7 @@
#include <linux/time.h> #include <linux/time.h>
#include "reiserfs.h" #include "reiserfs.h"
// find where objectid map starts /* find where objectid map starts */
#define objectid_map(s,rs) (old_format_only (s) ? \ #define objectid_map(s,rs) (old_format_only (s) ? \
(__le32 *)((struct reiserfs_super_block_v1 *)(rs) + 1) :\ (__le32 *)((struct reiserfs_super_block_v1 *)(rs) + 1) :\
(__le32 *)((rs) + 1)) (__le32 *)((rs) + 1))
...@@ -20,7 +20,7 @@ static void check_objectid_map(struct super_block *s, __le32 * map) ...@@ -20,7 +20,7 @@ static void check_objectid_map(struct super_block *s, __le32 * map)
reiserfs_panic(s, "vs-15010", "map corrupted: %lx", reiserfs_panic(s, "vs-15010", "map corrupted: %lx",
(long unsigned int)le32_to_cpu(map[0])); (long unsigned int)le32_to_cpu(map[0]));
// FIXME: add something else here /* FIXME: add something else here */
} }
#else #else
...@@ -29,19 +29,21 @@ static void check_objectid_map(struct super_block *s, __le32 * map) ...@@ -29,19 +29,21 @@ static void check_objectid_map(struct super_block *s, __le32 * map)
} }
#endif #endif
/* When we allocate objectids we allocate the first unused objectid. /*
Each sequence of objectids in use (the odd sequences) is followed * When we allocate objectids we allocate the first unused objectid.
by a sequence of objectids not in use (the even sequences). We * Each sequence of objectids in use (the odd sequences) is followed
only need to record the last objectid in each of these sequences * by a sequence of objectids not in use (the even sequences). We
(both the odd and even sequences) in order to fully define the * only need to record the last objectid in each of these sequences
boundaries of the sequences. A consequence of allocating the first * (both the odd and even sequences) in order to fully define the
objectid not in use is that under most conditions this scheme is * boundaries of the sequences. A consequence of allocating the first
extremely compact. The exception is immediately after a sequence * objectid not in use is that under most conditions this scheme is
of operations which deletes a large number of objects of * extremely compact. The exception is immediately after a sequence
non-sequential objectids, and even then it will become compact * of operations which deletes a large number of objects of
again as soon as more objects are created. Note that many * non-sequential objectids, and even then it will become compact
interesting optimizations of layout could result from complicating * again as soon as more objects are created. Note that many
objectid assignment, but we have deferred making them for now. */ * interesting optimizations of layout could result from complicating
* objectid assignment, but we have deferred making them for now.
*/
/* get unique object identifier */ /* get unique object identifier */
__u32 reiserfs_get_unused_objectid(struct reiserfs_transaction_handle *th) __u32 reiserfs_get_unused_objectid(struct reiserfs_transaction_handle *th)
...@@ -64,19 +66,23 @@ __u32 reiserfs_get_unused_objectid(struct reiserfs_transaction_handle *th) ...@@ -64,19 +66,23 @@ __u32 reiserfs_get_unused_objectid(struct reiserfs_transaction_handle *th)
return 0; return 0;
} }
/* This incrementation allocates the first unused objectid. That /*
is to say, the first entry on the objectid map is the first * This incrementation allocates the first unused objectid. That
unused objectid, and by incrementing it we use it. See below * is to say, the first entry on the objectid map is the first
where we check to see if we eliminated a sequence of unused * unused objectid, and by incrementing it we use it. See below
objectids.... */ * where we check to see if we eliminated a sequence of unused
* objectids....
*/
map[1] = cpu_to_le32(unused_objectid + 1); map[1] = cpu_to_le32(unused_objectid + 1);
/* Now we check to see if we eliminated the last remaining member of /*
the first even sequence (and can eliminate the sequence by * Now we check to see if we eliminated the last remaining member of
eliminating its last objectid from oids), and can collapse the * the first even sequence (and can eliminate the sequence by
first two odd sequences into one sequence. If so, then the net * eliminating its last objectid from oids), and can collapse the
result is to eliminate a pair of objectids from oids. We do this * first two odd sequences into one sequence. If so, then the net
by shifting the entire map to the left. */ * result is to eliminate a pair of objectids from oids. We do this
* by shifting the entire map to the left.
*/
if (sb_oid_cursize(rs) > 2 && map[1] == map[2]) { if (sb_oid_cursize(rs) > 2 && map[1] == map[2]) {
memmove(map + 1, map + 3, memmove(map + 1, map + 3,
(sb_oid_cursize(rs) - 3) * sizeof(__u32)); (sb_oid_cursize(rs) - 3) * sizeof(__u32));
...@@ -97,30 +103,33 @@ void reiserfs_release_objectid(struct reiserfs_transaction_handle *th, ...@@ -97,30 +103,33 @@ void reiserfs_release_objectid(struct reiserfs_transaction_handle *th,
int i = 0; int i = 0;
BUG_ON(!th->t_trans_id); BUG_ON(!th->t_trans_id);
//return; /*return; */
check_objectid_map(s, map); check_objectid_map(s, map);
reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1); reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1);
journal_mark_dirty(th, s, SB_BUFFER_WITH_SB(s)); journal_mark_dirty(th, s, SB_BUFFER_WITH_SB(s));
/* start at the beginning of the objectid map (i = 0) and go to /*
the end of it (i = disk_sb->s_oid_cursize). Linear search is * start at the beginning of the objectid map (i = 0) and go to
what we use, though it is possible that binary search would be * the end of it (i = disk_sb->s_oid_cursize). Linear search is
more efficient after performing lots of deletions (which is * what we use, though it is possible that binary search would be
when oids is large.) We only check even i's. */ * more efficient after performing lots of deletions (which is
* when oids is large.) We only check even i's.
*/
while (i < sb_oid_cursize(rs)) { while (i < sb_oid_cursize(rs)) {
if (objectid_to_release == le32_to_cpu(map[i])) { if (objectid_to_release == le32_to_cpu(map[i])) {
/* This incrementation unallocates the objectid. */ /* This incrementation unallocates the objectid. */
//map[i]++;
le32_add_cpu(&map[i], 1); le32_add_cpu(&map[i], 1);
/* Did we unallocate the last member of an odd sequence, and can shrink oids? */ /*
* Did we unallocate the last member of an
* odd sequence, and can shrink oids?
*/
if (map[i] == map[i + 1]) { if (map[i] == map[i + 1]) {
/* shrink objectid map */ /* shrink objectid map */
memmove(map + i, map + i + 2, memmove(map + i, map + i + 2,
(sb_oid_cursize(rs) - i - (sb_oid_cursize(rs) - i -
2) * sizeof(__u32)); 2) * sizeof(__u32));
//disk_sb->s_oid_cursize -= 2;
set_sb_oid_cursize(rs, sb_oid_cursize(rs) - 2); set_sb_oid_cursize(rs, sb_oid_cursize(rs) - 2);
RFALSE(sb_oid_cursize(rs) < 2 || RFALSE(sb_oid_cursize(rs) < 2 ||
...@@ -135,14 +144,19 @@ void reiserfs_release_objectid(struct reiserfs_transaction_handle *th, ...@@ -135,14 +144,19 @@ void reiserfs_release_objectid(struct reiserfs_transaction_handle *th,
objectid_to_release < le32_to_cpu(map[i + 1])) { objectid_to_release < le32_to_cpu(map[i + 1])) {
/* size of objectid map is not changed */ /* size of objectid map is not changed */
if (objectid_to_release + 1 == le32_to_cpu(map[i + 1])) { if (objectid_to_release + 1 == le32_to_cpu(map[i + 1])) {
//objectid_map[i+1]--;
le32_add_cpu(&map[i + 1], -1); le32_add_cpu(&map[i + 1], -1);
return; return;
} }
/* JDM comparing two little-endian values for equality -- safe */ /*
* JDM comparing two little-endian values for
* equality -- safe
*/
/*
* objectid map must be expanded, but
* there is no space
*/
if (sb_oid_cursize(rs) == sb_oid_maxsize(rs)) { if (sb_oid_cursize(rs) == sb_oid_maxsize(rs)) {
/* objectid map must be expanded, but there is no space */
PROC_INFO_INC(s, leaked_oid); PROC_INFO_INC(s, leaked_oid);
return; return;
} }
...@@ -178,8 +192,9 @@ int reiserfs_convert_objectid_map_v1(struct super_block *s) ...@@ -178,8 +192,9 @@ int reiserfs_convert_objectid_map_v1(struct super_block *s)
new_objectid_map = (__le32 *) (disk_sb + 1); new_objectid_map = (__le32 *) (disk_sb + 1);
if (cur_size > new_size) { if (cur_size > new_size) {
/* mark everyone used that was listed as free at the end of the objectid /*
** map * mark everyone used that was listed as free at
* the end of the objectid map
*/ */
objectid_map[new_size - 1] = objectid_map[cur_size - 1]; objectid_map[new_size - 1] = objectid_map[cur_size - 1];
set_sb_oid_cursize(disk_sb, new_size); set_sb_oid_cursize(disk_sb, new_size);
......
...@@ -172,18 +172,19 @@ static char *is_there_reiserfs_struct(char *fmt, int *what) ...@@ -172,18 +172,19 @@ static char *is_there_reiserfs_struct(char *fmt, int *what)
return k; return k;
} }
/* debugging reiserfs we used to print out a lot of different /*
variables, like keys, item headers, buffer heads etc. Values of * debugging reiserfs we used to print out a lot of different
most fields matter. So it took a long time just to write * variables, like keys, item headers, buffer heads etc. Values of
appropriative printk. With this reiserfs_warning you can use format * most fields matter. So it took a long time just to write
specification for complex structures like you used to do with * appropriative printk. With this reiserfs_warning you can use format
printfs for integers, doubles and pointers. For instance, to print * specification for complex structures like you used to do with
out key structure you have to write just: * printfs for integers, doubles and pointers. For instance, to print
reiserfs_warning ("bad key %k", key); * out key structure you have to write just:
instead of * reiserfs_warning ("bad key %k", key);
printk ("bad key %lu %lu %lu %lu", key->k_dir_id, key->k_objectid, * instead of
key->k_offset, key->k_uniqueness); * printk ("bad key %lu %lu %lu %lu", key->k_dir_id, key->k_objectid,
*/ * key->k_offset, key->k_uniqueness);
*/
static DEFINE_SPINLOCK(error_lock); static DEFINE_SPINLOCK(error_lock);
static void prepare_error_buf(const char *fmt, va_list args) static void prepare_error_buf(const char *fmt, va_list args)
{ {
...@@ -243,15 +244,16 @@ static void prepare_error_buf(const char *fmt, va_list args) ...@@ -243,15 +244,16 @@ static void prepare_error_buf(const char *fmt, va_list args)
} }
/* in addition to usual conversion specifiers this accepts reiserfs /*
specific conversion specifiers: * in addition to usual conversion specifiers this accepts reiserfs
%k to print little endian key, * specific conversion specifiers:
%K to print cpu key, * %k to print little endian key,
%h to print item_head, * %K to print cpu key,
%t to print directory entry * %h to print item_head,
%z to print block head (arg must be struct buffer_head * * %t to print directory entry
%b to print buffer_head * %z to print block head (arg must be struct buffer_head *
*/ * %b to print buffer_head
*/
#define do_reiserfs_warning(fmt)\ #define do_reiserfs_warning(fmt)\
{\ {\
...@@ -304,50 +306,52 @@ void reiserfs_debug(struct super_block *s, int level, const char *fmt, ...) ...@@ -304,50 +306,52 @@ void reiserfs_debug(struct super_block *s, int level, const char *fmt, ...)
#endif #endif
} }
/* The format: /*
* The format:
maintainer-errorid: [function-name:] message *
* maintainer-errorid: [function-name:] message
where errorid is unique to the maintainer and function-name is *
optional, is recommended, so that anyone can easily find the bug * where errorid is unique to the maintainer and function-name is
with a simple grep for the short to type string * optional, is recommended, so that anyone can easily find the bug
maintainer-errorid. Don't bother with reusing errorids, there are * with a simple grep for the short to type string
lots of numbers out there. * maintainer-errorid. Don't bother with reusing errorids, there are
* lots of numbers out there.
Example: *
* Example:
reiserfs_panic( *
p_sb, "reiser-29: reiserfs_new_blocknrs: " * reiserfs_panic(
"one of search_start or rn(%d) is equal to MAX_B_NUM," * p_sb, "reiser-29: reiserfs_new_blocknrs: "
"which means that we are optimizing location based on the bogus location of a temp buffer (%p).", * "one of search_start or rn(%d) is equal to MAX_B_NUM,"
rn, bh * "which means that we are optimizing location based on the "
); * "bogus location of a temp buffer (%p).",
* rn, bh
Regular panic()s sometimes clear the screen before the message can * );
be read, thus the need for the while loop. *
* Regular panic()s sometimes clear the screen before the message can
Numbering scheme for panic used by Vladimir and Anatoly( Hans completely ignores this scheme, and considers it * be read, thus the need for the while loop.
pointless complexity): *
* Numbering scheme for panic used by Vladimir and Anatoly( Hans completely
panics in reiserfs.h have numbers from 1000 to 1999 * ignores this scheme, and considers it pointless complexity):
super.c 2000 to 2999 *
preserve.c (unused) 3000 to 3999 * panics in reiserfs_fs.h have numbers from 1000 to 1999
bitmap.c 4000 to 4999 * super.c 2000 to 2999
stree.c 5000 to 5999 * preserve.c (unused) 3000 to 3999
prints.c 6000 to 6999 * bitmap.c 4000 to 4999
namei.c 7000 to 7999 * stree.c 5000 to 5999
fix_nodes.c 8000 to 8999 * prints.c 6000 to 6999
dir.c 9000 to 9999 * namei.c 7000 to 7999
lbalance.c 10000 to 10999 * fix_nodes.c 8000 to 8999
ibalance.c 11000 to 11999 not ready * dir.c 9000 to 9999
do_balan.c 12000 to 12999 * lbalance.c 10000 to 10999
inode.c 13000 to 13999 * ibalance.c 11000 to 11999 not ready
file.c 14000 to 14999 * do_balan.c 12000 to 12999
objectid.c 15000 - 15999 * inode.c 13000 to 13999
buffer.c 16000 - 16999 * file.c 14000 to 14999
symlink.c 17000 - 17999 * objectid.c 15000 - 15999
* buffer.c 16000 - 16999
. */ * symlink.c 17000 - 17999
*
* . */
void __reiserfs_panic(struct super_block *sb, const char *id, void __reiserfs_panic(struct super_block *sb, const char *id,
const char *function, const char *fmt, ...) const char *function, const char *fmt, ...)
...@@ -411,9 +415,11 @@ void reiserfs_abort(struct super_block *sb, int errno, const char *fmt, ...) ...@@ -411,9 +415,11 @@ void reiserfs_abort(struct super_block *sb, int errno, const char *fmt, ...)
reiserfs_abort_journal(sb, errno); reiserfs_abort_journal(sb, errno);
} }
/* this prints internal nodes (4 keys/items in line) (dc_number, /*
dc_size)[k_dirid, k_objectid, k_offset, k_uniqueness](dc_number, * this prints internal nodes (4 keys/items in line) (dc_number,
dc_size)...*/ * dc_size)[k_dirid, k_objectid, k_offset, k_uniqueness](dc_number,
* dc_size)...
*/
static int print_internal(struct buffer_head *bh, int first, int last) static int print_internal(struct buffer_head *bh, int first, int last)
{ {
struct reiserfs_key *key; struct reiserfs_key *key;
...@@ -543,9 +549,11 @@ static int print_super_block(struct buffer_head *bh) ...@@ -543,9 +549,11 @@ static int print_super_block(struct buffer_head *bh)
printk("Block count %u\n", sb_block_count(rs)); printk("Block count %u\n", sb_block_count(rs));
printk("Blocksize %d\n", sb_blocksize(rs)); printk("Blocksize %d\n", sb_blocksize(rs));
printk("Free blocks %u\n", sb_free_blocks(rs)); printk("Free blocks %u\n", sb_free_blocks(rs));
// FIXME: this would be confusing if /*
// someone stores reiserfs super block in some data block ;) * FIXME: this would be confusing if
* someone stores reiserfs super block in some data block ;)
// skipped = (bh->b_blocknr * bh->b_size) / sb_blocksize(rs); // skipped = (bh->b_blocknr * bh->b_size) / sb_blocksize(rs);
*/
skipped = bh->b_blocknr; skipped = bh->b_blocknr;
data_blocks = sb_block_count(rs) - skipped - 1 - sb_bmap_nr(rs) - data_blocks = sb_block_count(rs) - skipped - 1 - sb_bmap_nr(rs) -
(!is_reiserfs_jr(rs) ? sb_jp_journal_size(rs) + (!is_reiserfs_jr(rs) ? sb_jp_journal_size(rs) +
...@@ -581,8 +589,8 @@ static int print_desc_block(struct buffer_head *bh) ...@@ -581,8 +589,8 @@ static int print_desc_block(struct buffer_head *bh)
return 0; return 0;
} }
/* ..., int print_mode, int first, int last) */
void print_block(struct buffer_head *bh, ...) //int print_mode, int first, int last) void print_block(struct buffer_head *bh, ...)
{ {
va_list args; va_list args;
int mode, first, last; int mode, first, last;
......
This diff is collapsed.
...@@ -53,8 +53,10 @@ int reiserfs_resize(struct super_block *s, unsigned long block_count_new) ...@@ -53,8 +53,10 @@ int reiserfs_resize(struct super_block *s, unsigned long block_count_new)
} }
bforget(bh); bforget(bh);
/* old disk layout detection; those partitions can be mounted, but /*
* cannot be resized */ * old disk layout detection; those partitions can be mounted, but
* cannot be resized
*/
if (SB_BUFFER_WITH_SB(s)->b_blocknr * SB_BUFFER_WITH_SB(s)->b_size if (SB_BUFFER_WITH_SB(s)->b_blocknr * SB_BUFFER_WITH_SB(s)->b_size
!= REISERFS_DISK_OFFSET_IN_BYTES) { != REISERFS_DISK_OFFSET_IN_BYTES) {
printk printk
...@@ -86,12 +88,14 @@ int reiserfs_resize(struct super_block *s, unsigned long block_count_new) ...@@ -86,12 +88,14 @@ int reiserfs_resize(struct super_block *s, unsigned long block_count_new)
("reiserfs_resize: unable to allocate memory for journal bitmaps\n"); ("reiserfs_resize: unable to allocate memory for journal bitmaps\n");
return -ENOMEM; return -ENOMEM;
} }
/* the new journal bitmaps are zero filled, now we copy in the bitmap /*
** node pointers from the old journal bitmap structs, and then * the new journal bitmaps are zero filled, now we copy i
** transfer the new data structures into the journal struct. * the bitmap node pointers from the old journal bitmap
** * structs, and then transfer the new data structures
** using the copy_size var below allows this code to work for * into the journal struct.
** both shrinking and expanding the FS. *
* using the copy_size var below allows this code to work for
* both shrinking and expanding the FS.
*/ */
copy_size = bmap_nr_new < bmap_nr ? bmap_nr_new : bmap_nr; copy_size = bmap_nr_new < bmap_nr ? bmap_nr_new : bmap_nr;
copy_size = copy_size =
...@@ -101,36 +105,45 @@ int reiserfs_resize(struct super_block *s, unsigned long block_count_new) ...@@ -101,36 +105,45 @@ int reiserfs_resize(struct super_block *s, unsigned long block_count_new)
jb = SB_JOURNAL(s)->j_list_bitmap + i; jb = SB_JOURNAL(s)->j_list_bitmap + i;
memcpy(jbitmap[i].bitmaps, jb->bitmaps, copy_size); memcpy(jbitmap[i].bitmaps, jb->bitmaps, copy_size);
/* just in case vfree schedules on us, copy the new /*
** pointer into the journal struct before freeing the * just in case vfree schedules on us, copy the new
** old one * pointer into the journal struct before freeing the
* old one
*/ */
node_tmp = jb->bitmaps; node_tmp = jb->bitmaps;
jb->bitmaps = jbitmap[i].bitmaps; jb->bitmaps = jbitmap[i].bitmaps;
vfree(node_tmp); vfree(node_tmp);
} }
/* allocate additional bitmap blocks, reallocate array of bitmap /*
* block pointers */ * allocate additional bitmap blocks, reallocate
* array of bitmap block pointers
*/
bitmap = bitmap =
vzalloc(sizeof(struct reiserfs_bitmap_info) * bmap_nr_new); vzalloc(sizeof(struct reiserfs_bitmap_info) * bmap_nr_new);
if (!bitmap) { if (!bitmap) {
/* Journal bitmaps are still supersized, but the memory isn't /*
* leaked, so I guess it's ok */ * Journal bitmaps are still supersized, but the
* memory isn't leaked, so I guess it's ok
*/
printk("reiserfs_resize: unable to allocate memory.\n"); printk("reiserfs_resize: unable to allocate memory.\n");
return -ENOMEM; return -ENOMEM;
} }
for (i = 0; i < bmap_nr; i++) for (i = 0; i < bmap_nr; i++)
bitmap[i] = old_bitmap[i]; bitmap[i] = old_bitmap[i];
/* This doesn't go through the journal, but it doesn't have to. /*
* The changes are still atomic: We're synced up when the journal * This doesn't go through the journal, but it doesn't have to.
* transaction begins, and the new bitmaps don't matter if the * The changes are still atomic: We're synced up when the
* transaction fails. */ * journal transaction begins, and the new bitmaps don't
* matter if the transaction fails.
*/
for (i = bmap_nr; i < bmap_nr_new; i++) { for (i = bmap_nr; i < bmap_nr_new; i++) {
int depth; int depth;
/* don't use read_bitmap_block since it will cache /*
* the uninitialized bitmap */ * don't use read_bitmap_block since it will cache
* the uninitialized bitmap
*/
depth = reiserfs_write_unlock_nested(s); depth = reiserfs_write_unlock_nested(s);
bh = sb_bread(s, i * s->s_blocksize * 8); bh = sb_bread(s, i * s->s_blocksize * 8);
reiserfs_write_lock_nested(s, depth); reiserfs_write_lock_nested(s, depth);
...@@ -147,7 +160,7 @@ int reiserfs_resize(struct super_block *s, unsigned long block_count_new) ...@@ -147,7 +160,7 @@ int reiserfs_resize(struct super_block *s, unsigned long block_count_new)
depth = reiserfs_write_unlock_nested(s); depth = reiserfs_write_unlock_nested(s);
sync_dirty_buffer(bh); sync_dirty_buffer(bh);
reiserfs_write_lock_nested(s, depth); reiserfs_write_lock_nested(s, depth);
// update bitmap_info stuff /* update bitmap_info stuff */
bitmap[i].free_count = sb_blocksize(sb) * 8 - 1; bitmap[i].free_count = sb_blocksize(sb) * 8 - 1;
brelse(bh); brelse(bh);
} }
...@@ -156,9 +169,11 @@ int reiserfs_resize(struct super_block *s, unsigned long block_count_new) ...@@ -156,9 +169,11 @@ int reiserfs_resize(struct super_block *s, unsigned long block_count_new)
vfree(old_bitmap); vfree(old_bitmap);
} }
/* begin transaction, if there was an error, it's fine. Yes, we have /*
* begin transaction, if there was an error, it's fine. Yes, we have
* incorrect bitmaps now, but none of it is ever going to touch the * incorrect bitmaps now, but none of it is ever going to touch the
* disk anyway. */ * disk anyway.
*/
err = journal_begin(&th, s, 10); err = journal_begin(&th, s, 10);
if (err) if (err)
return err; return err;
......
This diff is collapsed.
This diff is collapsed.
This diff is collapsed.
...@@ -56,9 +56,11 @@ ...@@ -56,9 +56,11 @@
#define XAROOT_NAME "xattrs" #define XAROOT_NAME "xattrs"
/* Helpers for inode ops. We do this so that we don't have all the VFS /*
* Helpers for inode ops. We do this so that we don't have all the VFS
* overhead and also for proper i_mutex annotation. * overhead and also for proper i_mutex annotation.
* dir->i_mutex must be held for all of them. */ * dir->i_mutex must be held for all of them.
*/
#ifdef CONFIG_REISERFS_FS_XATTR #ifdef CONFIG_REISERFS_FS_XATTR
static int xattr_create(struct inode *dir, struct dentry *dentry, int mode) static int xattr_create(struct inode *dir, struct dentry *dentry, int mode)
{ {
...@@ -73,10 +75,12 @@ static int xattr_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) ...@@ -73,10 +75,12 @@ static int xattr_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
return dir->i_op->mkdir(dir, dentry, mode); return dir->i_op->mkdir(dir, dentry, mode);
} }
/* We use I_MUTEX_CHILD here to silence lockdep. It's safe because xattr /*
* We use I_MUTEX_CHILD here to silence lockdep. It's safe because xattr
* mutation ops aren't called during rename or splace, which are the * mutation ops aren't called during rename or splace, which are the
* only other users of I_MUTEX_CHILD. It violates the ordering, but that's * only other users of I_MUTEX_CHILD. It violates the ordering, but that's
* better than allocating another subclass just for this code. */ * better than allocating another subclass just for this code.
*/
static int xattr_unlink(struct inode *dir, struct dentry *dentry) static int xattr_unlink(struct inode *dir, struct dentry *dentry)
{ {
int error; int error;
...@@ -166,9 +170,11 @@ static struct dentry *open_xa_dir(const struct inode *inode, int flags) ...@@ -166,9 +170,11 @@ static struct dentry *open_xa_dir(const struct inode *inode, int flags)
return xadir; return xadir;
} }
/* The following are side effects of other operations that aren't explicitly /*
* The following are side effects of other operations that aren't explicitly
* modifying extended attributes. This includes operations such as permissions * modifying extended attributes. This includes operations such as permissions
* or ownership changes, object deletions, etc. */ * or ownership changes, object deletions, etc.
*/
struct reiserfs_dentry_buf { struct reiserfs_dentry_buf {
struct dir_context ctx; struct dir_context ctx;
struct dentry *xadir; struct dentry *xadir;
...@@ -267,11 +273,13 @@ static int reiserfs_for_each_xattr(struct inode *inode, ...@@ -267,11 +273,13 @@ static int reiserfs_for_each_xattr(struct inode *inode,
cleanup_dentry_buf(&buf); cleanup_dentry_buf(&buf);
if (!err) { if (!err) {
/* We start a transaction here to avoid a ABBA situation /*
* We start a transaction here to avoid a ABBA situation
* between the xattr root's i_mutex and the journal lock. * between the xattr root's i_mutex and the journal lock.
* This doesn't incur much additional overhead since the * This doesn't incur much additional overhead since the
* new transaction will just nest inside the * new transaction will just nest inside the
* outer transaction. */ * outer transaction.
*/
int blocks = JOURNAL_PER_BALANCE_CNT * 2 + 2 + int blocks = JOURNAL_PER_BALANCE_CNT * 2 + 2 +
4 * REISERFS_QUOTA_TRANS_BLOCKS(inode->i_sb); 4 * REISERFS_QUOTA_TRANS_BLOCKS(inode->i_sb);
struct reiserfs_transaction_handle th; struct reiserfs_transaction_handle th;
...@@ -349,9 +357,11 @@ int reiserfs_chown_xattrs(struct inode *inode, struct iattr *attrs) ...@@ -349,9 +357,11 @@ int reiserfs_chown_xattrs(struct inode *inode, struct iattr *attrs)
} }
#ifdef CONFIG_REISERFS_FS_XATTR #ifdef CONFIG_REISERFS_FS_XATTR
/* Returns a dentry corresponding to a specific extended attribute file /*
* Returns a dentry corresponding to a specific extended attribute file
* for the inode. If flags allow, the file is created. Otherwise, a * for the inode. If flags allow, the file is created. Otherwise, a
* valid or negative dentry, or an error is returned. */ * valid or negative dentry, or an error is returned.
*/
static struct dentry *xattr_lookup(struct inode *inode, const char *name, static struct dentry *xattr_lookup(struct inode *inode, const char *name,
int flags) int flags)
{ {
...@@ -400,8 +410,10 @@ static struct page *reiserfs_get_page(struct inode *dir, size_t n) ...@@ -400,8 +410,10 @@ static struct page *reiserfs_get_page(struct inode *dir, size_t n)
{ {
struct address_space *mapping = dir->i_mapping; struct address_space *mapping = dir->i_mapping;
struct page *page; struct page *page;
/* We can deadlock if we try to free dentries, /*
and an unlink/rmdir has just occurred - GFP_NOFS avoids this */ * We can deadlock if we try to free dentries,
* and an unlink/rmdir has just occurred - GFP_NOFS avoids this
*/
mapping_set_gfp_mask(mapping, GFP_NOFS); mapping_set_gfp_mask(mapping, GFP_NOFS);
page = read_mapping_page(mapping, n >> PAGE_CACHE_SHIFT, NULL); page = read_mapping_page(mapping, n >> PAGE_CACHE_SHIFT, NULL);
if (!IS_ERR(page)) { if (!IS_ERR(page)) {
...@@ -615,8 +627,10 @@ reiserfs_xattr_get(struct inode *inode, const char *name, void *buffer, ...@@ -615,8 +627,10 @@ reiserfs_xattr_get(struct inode *inode, const char *name, void *buffer,
if (name == NULL) if (name == NULL)
return -EINVAL; return -EINVAL;
/* We can't have xattrs attached to v1 items since they don't have /*
* generation numbers */ * We can't have xattrs attached to v1 items since they don't have
* generation numbers
*/
if (get_inode_sd_version(inode) == STAT_DATA_V1) if (get_inode_sd_version(inode) == STAT_DATA_V1)
return -EOPNOTSUPP; return -EOPNOTSUPP;
...@@ -913,12 +927,16 @@ static const struct xattr_handler *reiserfs_xattr_handlers[] = { ...@@ -913,12 +927,16 @@ static const struct xattr_handler *reiserfs_xattr_handlers[] = {
static int xattr_mount_check(struct super_block *s) static int xattr_mount_check(struct super_block *s)
{ {
/* We need generation numbers to ensure that the oid mapping is correct /*
* v3.5 filesystems don't have them. */ * We need generation numbers to ensure that the oid mapping is correct
* v3.5 filesystems don't have them.
*/
if (old_format_only(s)) { if (old_format_only(s)) {
if (reiserfs_xattrs_optional(s)) { if (reiserfs_xattrs_optional(s)) {
/* Old format filesystem, but optional xattrs have /*
* been enabled. Error out. */ * Old format filesystem, but optional xattrs have
* been enabled. Error out.
*/
reiserfs_warning(s, "jdm-2005", reiserfs_warning(s, "jdm-2005",
"xattrs/ACLs not supported " "xattrs/ACLs not supported "
"on pre-v3.6 format filesystems. " "on pre-v3.6 format filesystems. "
...@@ -972,9 +990,11 @@ int reiserfs_lookup_privroot(struct super_block *s) ...@@ -972,9 +990,11 @@ int reiserfs_lookup_privroot(struct super_block *s)
return err; return err;
} }
/* We need to take a copy of the mount flags since things like /*
* We need to take a copy of the mount flags since things like
* MS_RDONLY don't get set until *after* we're called. * MS_RDONLY don't get set until *after* we're called.
* mount_flags != mount_options */ * mount_flags != mount_options
*/
int reiserfs_xattr_init(struct super_block *s, int mount_flags) int reiserfs_xattr_init(struct super_block *s, int mount_flags)
{ {
int err = 0; int err = 0;
......
...@@ -61,7 +61,8 @@ static inline loff_t reiserfs_xattr_nblocks(struct inode *inode, loff_t size) ...@@ -61,7 +61,8 @@ static inline loff_t reiserfs_xattr_nblocks(struct inode *inode, loff_t size)
return ret; return ret;
} }
/* We may have to create up to 3 objects: xattr root, xattr dir, xattr file. /*
* We may have to create up to 3 objects: xattr root, xattr dir, xattr file.
* Let's try to be smart about it. * Let's try to be smart about it.
* xattr root: We cache it. If it's not cached, we may need to create it. * xattr root: We cache it. If it's not cached, we may need to create it.
* xattr dir: If anything has been loaded for this inode, we can set a flag * xattr dir: If anything has been loaded for this inode, we can set a flag
......
...@@ -25,8 +25,10 @@ reiserfs_set_acl(struct inode *inode, struct posix_acl *acl, int type) ...@@ -25,8 +25,10 @@ reiserfs_set_acl(struct inode *inode, struct posix_acl *acl, int type)
int size = acl ? posix_acl_xattr_size(acl->a_count) : 0; int size = acl ? posix_acl_xattr_size(acl->a_count) : 0;
/* Pessimism: We can't assume that anything from the xattr root up /*
* has been created. */ * Pessimism: We can't assume that anything from the xattr root up
* has been created.
*/
jcreate_blocks = reiserfs_xattr_jcreate_nblocks(inode) + jcreate_blocks = reiserfs_xattr_jcreate_nblocks(inode) +
reiserfs_xattr_nblocks(inode, size) * 2; reiserfs_xattr_nblocks(inode, size) * 2;
...@@ -208,8 +210,10 @@ struct posix_acl *reiserfs_get_acl(struct inode *inode, int type) ...@@ -208,8 +210,10 @@ struct posix_acl *reiserfs_get_acl(struct inode *inode, int type)
retval = reiserfs_xattr_get(inode, name, value, size); retval = reiserfs_xattr_get(inode, name, value, size);
if (retval == -ENODATA || retval == -ENOSYS) { if (retval == -ENODATA || retval == -ENOSYS) {
/* This shouldn't actually happen as it should have /*
been caught above.. but just in case */ * This shouldn't actually happen as it should have
* been caught above.. but just in case
*/
acl = NULL; acl = NULL;
} else if (retval < 0) { } else if (retval < 0) {
acl = ERR_PTR(retval); acl = ERR_PTR(retval);
...@@ -290,8 +294,10 @@ __reiserfs_set_acl(struct reiserfs_transaction_handle *th, struct inode *inode, ...@@ -290,8 +294,10 @@ __reiserfs_set_acl(struct reiserfs_transaction_handle *th, struct inode *inode,
return error; return error;
} }
/* dir->i_mutex: locked, /*
* inode is new and not released into the wild yet */ * dir->i_mutex: locked,
* inode is new and not released into the wild yet
*/
int int
reiserfs_inherit_default_acl(struct reiserfs_transaction_handle *th, reiserfs_inherit_default_acl(struct reiserfs_transaction_handle *th,
struct inode *dir, struct dentry *dentry, struct inode *dir, struct dentry *dentry,
...@@ -304,14 +310,18 @@ reiserfs_inherit_default_acl(struct reiserfs_transaction_handle *th, ...@@ -304,14 +310,18 @@ reiserfs_inherit_default_acl(struct reiserfs_transaction_handle *th,
if (S_ISLNK(inode->i_mode)) if (S_ISLNK(inode->i_mode))
return 0; return 0;
/* ACLs can only be used on "new" objects, so if it's an old object /*
* there is nothing to inherit from */ * ACLs can only be used on "new" objects, so if it's an old object
* there is nothing to inherit from
*/
if (get_inode_sd_version(dir) == STAT_DATA_V1) if (get_inode_sd_version(dir) == STAT_DATA_V1)
goto apply_umask; goto apply_umask;
/* Don't apply ACLs to objects in the .reiserfs_priv tree.. This /*
* Don't apply ACLs to objects in the .reiserfs_priv tree.. This
* would be useless since permissions are ignored, and a pain because * would be useless since permissions are ignored, and a pain because
* it introduces locking cycles */ * it introduces locking cycles
*/
if (IS_PRIVATE(dir)) { if (IS_PRIVATE(dir)) {
inode->i_flags |= S_PRIVATE; inode->i_flags |= S_PRIVATE;
goto apply_umask; goto apply_umask;
......
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