- 05 Jan, 2009 1 commit
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James Bottomley authored
A bug was introduced by commit b60af5b0 Author: Alan Stern <stern@rowland.harvard.edu> Date: Mon Nov 3 15:56:47 2008 -0500 [SCSI] simplify scsi_io_completion() because the simplification uses scsi_queue_insert(). The problem with this function is that it expects to be called from the completion path while the command is still outstanding, so it decrements the device and host busy counts to do the requeue. The problem is that scsi_io_completion() is a path executed well after these counts have *already* been decremented, leading to a double decrement if the command goes down any error path leading to ACTION_DELAYED_RETRY. The fix is to allow a private function __scsi_queue_insert() with a flag to say whether the busy counters should be decremented. This is made static to scsi_lib.c to discourage other use. Reported-by:
Mike Christie <michaelc@cs.wisc.edu> Signed-off-by:
James Bottomley <James.Bottomley@HansenPartnership.com>
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- 02 Jan, 2009 28 commits
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Roel Kluin authored
unsigned req->data_len cannot be negative, and fix =-/-= typo Signed-off-by:
Roel Kluin <roel.kluin@gmail.com> Signed-off-by:
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Geert Uytterhoeven authored
warning: ignoring return value of 'request_irq', declared with attribute warn_unused_result Signed-off-by:
Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by:
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Julia Lawall authored
If the NULL test is necessary, then the dereference should be moved below the NULL test. The semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/). // <smpl> @disable is_null@ identifier f; expression E; identifier fld; statement S; @@ + if (E == NULL) S f(...,E->fld,...); - if (E == NULL) S @@ identifier f; expression E; identifier fld; statement S; @@ + if (!E) S f(...,E->fld,...); - if (!E) S // </smpl> Signed-off-by:
Julia Lawall <julia@diku.dk> Acked-by:
"Prakash, Sathya" <Sathya.Prakash@lsi.com> Signed-off-by:
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Reinhard Nissl authored
I increased the delay step by step until loading of mvsas reliably detected the drive 200 times in sequence. A much better approach would be to monitor the hardware for some flag which indicates that port detection has finished, but I do not have any hardware documentation. Signed-off-by:
Reinhard Nissl <rnissl@gmx.de> Cc: Ke Wei <kewei@marvell.com> Signed-off-by:
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Kai Makisara authored
Make enlarge_buffer() retry allocation if the previously chosen page order was too small. Really limit the page order to 6. Return error if the maximum order is not large enough for the request. Signed-off-by:
Kai Makisara <Kai.Makisara@kolumbus.fi> Signed-off-by:
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Kai Makisara authored
This integrates st_scsi_kern_execute and st_do_scsi. IOW, it removes st_scsi_kern_execute. Then st has a single function, st_do_scsi, to perform SCSI commands. Signed-off-by:
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FUJITA Tomonori authored
frp_sg_current in struct st_buffer is always zero. We don't need it. Signed-off-by:
FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by:
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FUJITA Tomonori authored
orig_frp_segs in struct st_buffer is always zero. We don't need it. Signed-off-by:
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FUJITA Tomonori authored
- remove the from_initialization argument, which is always 1. We always need to use GFP_ATOMIC. - 'got' valuable is initialized to zero and doesn't change. We don't need it. Signed-off-by:
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FUJITA Tomonori authored
This removes the usage of struct scatterlist completely. Signed-off-by:
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FUJITA Tomonori authored
This removes struct st_buff_fragment and use reserved_pages array to store fragment buffer. Signed-off-by:
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FUJITA Tomonori authored
This removes unused buf_to_sg() that the non-dio path used. Signed-off-by:
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FUJITA Tomonori authored
This patch converts the dio path (mmap) to use st_scsi_execute. IOW, it removes scsi_execute_async in the non dio path. scsi_execute_async has gone! This also remove unused st_sleep_done. Signed-off-by:
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FUJITA Tomonori authored
This patch converts the non-dio path (fragment buffer path) to use st_scsi_execute. IOW, it removes scsi_execute_async in the non-dio path. Signed-off-by:
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FUJITA Tomonori authored
st_scsi_execute is a helper function to perform SCSI commands involving data transfer between user and kernel space (st_read and st_write). It's the future plan to combine this with st_scsi_kern_execute helper function. Signed-off-by:
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FUJITA Tomonori authored
This adds struct rq_map_data and the array of pointers to store fragment buffers to struct st_buffer. This patch doesn't remove st_buf_fragment but the latter patch does. Signed-off-by:
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FUJITA Tomonori authored
This patch simiplifies the fragment buffer management a bit, all the buffers in the fragment list become the same size. This is necessary to use the block layer API (sg driver was modified in the same way) since the block layer API takes the same size page frames instead of scatter gatter. Signed-off-by:
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FUJITA Tomonori authored
The commit 81882766 (block: make blk_rq_map_user take a NULL user-space buffer) extended blk_rq_map_user to accept a NULL user-space buffer with a READ command. It was necessary to convert sg to use the block layer mapping API. This patch extends blk_rq_map_user again for a WRITE command. It is necessary to convert st and osst drivers to use the block layer apping API. Signed-off-by:
Jens Axboe <jens.axboe@oracle.com> Signed-off-by:
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FUJITA Tomonori authored
This fixes bio_copy_user_iov to properly handle the partial mappings with struct rq_map_data (which only sg uses for now but st and osst will shortly). It adds the offset member to struct rq_map_data and changes blk_rq_map_user to update it so that bio_copy_user_iov can add an appropriate page frame via bio_add_pc_page(). Signed-off-by:
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FUJITA Tomonori authored
This fixes bio_add_page misuse in bio_copy_user_iov with rq_map_data, which only sg uses now. rq_map_data carries page frames for bio_add_pc_page. bio_copy_user_iov uses bio_add_pc_page with a larger size than PAGE_SIZE. It's clearly wrong. Signed-off-by:
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Brian King authored
In a previous patch to fix an issue with error recovery, the behavior of the max_requests module paramater was also changed. If, for some reason, max_requests is set to one by the user, we will end up with a negative number for can_queue. Fix this by making max_requests not include the two event structs needed to do error recovery. Signed-off-by:
Brian King <brking@linux.vnet.ibm.com> Signed-off-by:
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Julia Lawall authored
In each case, if the NULL test is necessary, then the dereference should be moved below the NULL test. The semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ type T; expression E; identifier i,fld; statement S; @@ - T i = E->fld; + T i; ... when != E when != i if (E == NULL) S + i = E->fld; // </smpl> Signed-off-by:
James Smart <James.Smart@Emulex.Com> Signed-off-by:
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Dmitri Vorobiev authored
The remove() callback in platform drivers should return int in accordance to the definition of the platform_driver structure. However, the SGI-specific WD93 SCSI controller driver defines the callback as a void function, which causes the following compilation warning: drivers/scsi/sgiwd93.c:314: warning: initialization from incompatible pointer type This patch fixes the warning by changing the return type of the remove() callback to what the core driver code requires. Signed-off-by:
Dmitri Vorobiev <dmitri.vorobiev@movial.fi> Signed-off-by:
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Brian King authored
If a link down event is received, outstanding commands may get returned to the ibmvfc driver with a "transaction cancelled implicit" response. This is currently translated to DID_ABORT, which does not get retried by SCSI core, but rather passes the failure up the stack. This can result in I/O errors at the filesystem level. Fix up this response a well as a few other error responses. Signed-off-by:
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Alan Stern authored
This patch (as1191) adds a missing "default" case in scsi_io_completion(), thereby fixing an "uninitialized variable" error. It also adds a missing newline to a log entry. Signed-off-by:
Alan Stern <stern@rowland.harvard.edu> Signed-off-by:
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Christoph Hellwig authored
Make sure the control flow in scsi_times_out makes sense. Signed-off-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
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Christoph Hellwig authored
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Kay Sievers authored
[jejb: limit ioctl to returning 20 characters to avoid overrun on long device names and add a few more conversions] Signed-off-by:Kay Sievers <kay.sievers@vrfy.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by:
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- 31 Dec, 2008 11 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6Linus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (34 commits) nfsd race fixes: jfs nfsd race fixes: reiserfs nfsd race fixes: ext4 nfsd race fixes: ext3 nfsd race fixes: ext2 nfsd/create race fixes, infrastructure filesystem notification: create fs/notify to contain all fs notification fs/block_dev.c: __read_mostly improvement and sb_is_blkdev_sb utilization kill ->dir_notify() filp_cachep can be static in fs/file_table.c fix f_count description in Documentation/filesystems/files.txt make INIT_FS use the __RW_LOCK_UNLOCKED initialization take init_fs to saner place kill vfs_permission pass a struct path * to may_open kill walk_init_root remove incorrect comment in inode_permission expand some comments (d_path / seq_path) correct wrong function name of d_put in kernel document and source comment fix switch_names() breakage in short-to-short case ...
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Dave Kleikamp authored
jfs version of Al Viro's nfsd race patches Signed-off-by:
Dave Kleikamp <shaggy@linux.vnet.ibm.com> Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk>
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Al Viro authored
... and the same for reiserfs. The difference here is that we need insert_inode_locked4() to match iget5_locked(). Signed-off-by: -
Al Viro authored
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Al Viro authored
ext3 analog of the previous patch Signed-off-by: -
Al Viro authored
* make ext2_new_inode() put the inode into icache in locked state * do not unlock until the inode is fully set up; otherwise nfsd might pick it in half-baked state. * make sure that ext2_new_inode() does *not* lead to two inodes with the same inumber hashed at the same time; otherwise a bogus fhandle coming from nfsd might race with inode creation: nfsd: iget_locked() creates inode nfsd: try to read from disk, block on that. ext2_new_inode(): allocate inode with that inumber ext2_new_inode(): insert it into icache, set it up and dirty ext2_write_inode(): get the relevant part of inode table in cache, set the entry for our inode (and start writing to disk) nfsd: get CPU again, look into inode table, see nice and sane on-disk inode, set the in-core inode from it oops - we have two in-core inodes with the same inumber live in icache, both used for IO. Welcome to fs corruption... Signed-off-by: -
Al Viro authored
new helpers - insert_inode_locked() and insert_inode_locked4(). Hash new inode, making sure that there's no such inode in icache already. If there is and it does not end up unhashed (as would happen if we have nfsd trying to resolve a bogus fhandle), fail. Otherwise insert our inode into hash and succeed. In either case have i_state set to new+locked; cleanup ends up being simpler with such calling conventions. Signed-off-by: -
Eric Paris authored
Creating a generic filesystem notification interface, fsnotify, which will be used by inotify, dnotify, and eventually fanotify is really starting to clutter the fs directory. This patch simply moves inotify and dnotify into fs/notify/inotify and fs/notify/dnotify respectively to make both current fs/ and future notification tidier. Signed-off-by:
Eric Paris <eparis@redhat.com> Signed-off-by:
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Denis ChengRq authored
- iget5_locked in bdget really needs blockdev_superblock, instead of bd_mnt, so bd_mnt could be just a local variable; - blockdev_superblock really needs __read_mostly, while local var bd_mnt not; - make use of sb_is_blkdev_sb in bd_forget, instead of direct reference to blockdev_superblock. Signed-off-by:
Denis ChengRq <crquan@gmail.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
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Al Viro authored
Remove the hopelessly misguided ->dir_notify(). The only instance (cifs) has been broken by design from the very beginning; the objects it creates are never destroyed, keep references to struct file they can outlive, nothing that could possibly evict them exists on close(2) path *and* no locking whatsoever is done to prevent races with close(), should the previous, er, deficiencies someday be dealt with. Signed-off-by: -
Eric Dumazet authored
Instead of creating the "filp" kmem_cache in vfs_caches_init(), we can do it a litle be later in files_init(), so that filp_cachep is static to fs/file_table.c Acked-by:
Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by:
Eric Dumazet <dada1@cosmosbay.com> Signed-off-by:
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