- 04 Jul, 2017 20 commits
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Eric Biggers authored
Currently, filesystems allow truncate(2) on an encrypted file without the encryption key. However, it's impossible to correctly handle the case where the size being truncated to is not a multiple of the filesystem block size, because that would require decrypting the final block, zeroing the part beyond i_size, then encrypting the block. As other modifications to encrypted file contents are prohibited without the key, just prohibit truncate(2) as well, making it fail with ENOKEY. Signed-off-by:
Eric Biggers <ebiggers@google.com> Acked-by:
Chao Yu <yuchao0@huawei.com> Signed-off-by:
Jaegeuk Kim <jaegeuk@kernel.org>
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Chao Yu authored
Codes related to sysfs and procfs are dispersive and mixed with sb related codes, but actually these codes are independent from others, so split them from super.c, and reorgnize and manger them in sysfs.c. Signed-off-by:
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Chao Yu authored
Just cleanup. Signed-off-by:
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Chao Yu authored
Commit 73faec4d ("f2fs: add mount option to select fault injection ratio") and Commit 08796897 ("f2fs: add fault injection to sysfs") forget to document mount option and sysfs file. This patch fixes to document them. Signed-off-by:
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Chao Yu authored
This patch fixes incorrect error number in error path of fill_super. Signed-off-by:
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Chao Yu authored
Signed-off-by:
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Chao Yu authored
If fault injection functionality is enabled, show additional injection rate in ->show_options. Signed-off-by:
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Christophe JAILLET authored
err must be set to -ENOMEM, otherwise we return 0. Fixes: a912b54d ("f2fs: split bio cache") Signed-off-by:
Christophe JAILLET <christophe.jaillet@wanadoo.fr> Reviewed-by:
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Tiezhu Yang authored
It is better to use variable name "inline_dentry" instead of "dentry_blk" when data type is "struct f2fs_inline_dentry". This patch has no functional changes, just to make code more readable especially when call the function make_dentry_ptr_inline() and f2fs_convert_inline_dir(). Signed-off-by:
Tiezhu Yang <kernelpatch@126.com> Reviewed-by:
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Chao Yu authored
With fault_injection option, generic/361 of fstests will complain us with below message: Call Trace: get_node_page+0x12/0x20 [f2fs] f2fs_iget+0x92/0x7d0 [f2fs] f2fs_fill_super+0x10fb/0x15e0 [f2fs] mount_bdev+0x184/0x1c0 f2fs_mount+0x15/0x20 [f2fs] mount_fs+0x39/0x150 vfs_kern_mount+0x67/0x110 do_mount+0x1bb/0xc70 SyS_mount+0x83/0xd0 do_syscall_64+0x6e/0x160 entry_SYSCALL64_slow_path+0x25/0x25 Since mkfs loop device in f2fs partition can be failed silently due to checkpoint error injection, so root inode page can be corrupted, in order to avoid needless panic, in get_node_page, it's better to leave message and return error to caller, and let fsck repaire it later. Signed-off-by:
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Chao Yu authored
We will never persist newly allocated nat entries during checkpoint(), so we don't need to track such nat entries in nat dirty list in order to avoid: - more latency during traversing dirty list; - sorting nat sets incorrectly due to recording wrong entry_cnt in nat entry set. Signed-off-by:
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Chao Yu authored
Recently, discard related codes have changed a lot, so add f2fs_bug_on to detect potential bug. Signed-off-by:
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Chao Yu authored
In order to avoid copied codes. Signed-off-by:
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Qiuyang Sun authored
Currently in F2FS, page faults and operations that truncate the pagecahe or data blocks, are completely unsynchronized. This can result in page fault faulting in a page into a range that we are changing after truncating, and thus we can end up with a page mapped to disk blocks that will be shortly freed. Filesystem corruption will shortly follow. This patch fixes the problem by creating new rw semaphore i_mmap_sem in f2fs_inode_info and grab it for functions removing blocks from extent tree and for read over page faults. The mechanism is similar to that in ext4. Signed-off-by:
Qiuyang Sun <sunqiuyang@huawei.com> Reviewed-by:
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Fan Li authored
The index of segment which the next nat block is in has only one different bit than the current one, so to get the next nat address, we can simply alter that one bit. Signed-off-by:
Fan Li <fanofcode.li@samsung.com> Reviewed-by:
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Jin Qian authored
Make sure number of entires doesn't exceed max journal size. Cc: stable@vger.kernel.org Signed-off-by:
Jin Qian <jinqian@android.com> Reviewed-by:
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Yunlei He authored
Mount fs with option noflush_merge, boot failed for illegal address fcc in function f2fs_issue_flush: if (!test_opt(sbi, FLUSH_MERGE)) { ret = submit_flush_wait(sbi); atomic_inc(&fcc->issued_flush); -> Here, fcc illegal return ret; } Signed-off-by:Yunlei He <heyunlei@huawei.com> Signed-off-by:
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Zhang Shengju authored
It's not necessary to specify 'int' casting for PTR_ERR. Signed-off-by:
Zhang Shengju <zhangshengju@cmss.chinamobile.com> Signed-off-by:
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Jaegeuk Kim authored
For example, f2fs_create - new_node_page is failed - handle_failed_inode - skip to add it into orphan list, since ni.blk_addr == NULL_ADDR : set_inode_flag(inode, FI_FREE_NID) f2fs_evict_inode - EIO due to fault injection - f2fs_bug_on() is triggered So, we don't need to call f2fs_bug_on in this case. Signed-off-by: -
Damien Le Moal authored
clear_prefree_segments() issues small discards after discarding full segments. These small discards may not be section aligned, so not zone aligned on a zoned block device, causing __f2fs_iissue_discard_zone() to fail. Fix this by not issuing small discards for a volume mounted with the BLKZONED feature enabled. Cc: stable@vger.kernel.org Signed-off-by:
Damien Le Moal <damien.lemoal@wdc.com> Reviewed-by:
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- 24 May, 2017 20 commits
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Eric Biggers authored
Since only an open file can be written to, and we only allow open()ing an encrypted file when its key is available, there is no need to check for the key again before permitting each ->write_iter(). This code was also broken in that it wouldn't actually have failed if the key was in fact unavailable. Signed-off-by:
David Gstir <david@sigma-star.at> Acked-by:
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Eric Biggers authored
Since only an open file can be mmap'ed, and we only allow open()ing an encrypted file when its key is available, there is no need to check for the key again before permitting each mmap(). This f2fs copy of this code was also broken in that it wouldn't actually have failed if the key was in fact unavailable. Signed-off-by:
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Chao Yu authored
Wait discard IO completion outside cmd_lock to avoid long latency of holding cmd_lock in IO busy scenario. Signed-off-by:
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Chao Yu authored
There could be more than one waiter waiting discard IO completion, so we need use complete_all() instead of complete() in f2fs_submit_discard_endio to avoid hungtask. Fixes: ec9895ad ("f2fs: don't hold cmd_lock during waiting discard command") Cc: <stable@vger.kernel.org> Signed-off-by:
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Chao Yu authored
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Chao Yu authored
Serialize data/node IOs by using fifo list instead of mutex lock, it will help to enhance concurrency of f2fs, meanwhile keeping LFS IO semantics. Signed-off-by:
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Chao Yu authored
Split wio_mutex to adjust different temperature bio cache. Signed-off-by:
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Yunlei He authored
Came across a hungtask caused by huge number of rb tree traversing during adding discard addrs in cp. This patch combine these consistence checks and move it to discard thread. Signed-off-by:
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Yunlei He authored
Thread A: Thread B: -f2fs_remount -sbi->mount_opt.opt = 0; <--- -f2fs_iget -do_read_inode -f2fs_init_extent_tree -F2FS_I(inode)->extent_tree is NULL -default_options && parse_options -remount return <--- -f2fs_map_blocks -f2fs_lookup_extent_tree -f2fs_bug_on(sbi, !et); The same problem with f2fs_new_inode. Signed-off-by: -
Jaegeuk Kim authored
This allows to freeze gc and discard threads. Cc: stable@vger.kernel.org Signed-off-by: -
Yunlei He authored
This patch add a new method get_ssr_cost to select SSR segment more accurately. Signed-off-by:
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Hou Pengyang authored
Signed-off-by:
Hou Pengyang <houpengyang@huawei.com> Signed-off-by:
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Jaegeuk Kim authored
Currently, if we do get_node_of_data before f2fs_lock_op, there may be dead lock as follows, where process A would be in infinite loop, and B will NOT be awaked. Process A(cp): Process B: f2fs_lock_all(sbi) get_dnode_of_data <---- lock dn.node_page flush_nodes f2fs_lock_op So, this patch adds f2fs_trylock_op to avoid f2fs_lock_op done by IPU. Signed-off-by: -
Jaegeuk Kim authored
Split DATA/NODE type bio cache according to different temperature, so write IOs with the same temperature can be merged in corresponding bio cache as much as possible, otherwise, different temperature write IOs submitting into one bio cache will always cause split of bio. Signed-off-by:
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Jaegeuk Kim authored
This patch just changes using fio instead of parameters. Signed-off-by: -
Jaegeuk Kim authored
Merged IO flow doesn't need to care about read IOs. f2fs_submit_merged_bio -> f2fs_submit_merged_write f2fs_submit_merged_bios -> f2fs_submit_merged_writes f2fs_submit_merged_bio_cond -> f2fs_submit_merged_write_cond Signed-off-by: -
Jaegeuk Kim authored
This patch avoids to use f2fs_submit_merged_bio for read, which was the only read case. Signed-off-by: -
Weichao Guo authored
By default, f2fs_gc returns -EINVAL in general error cases, e.g., no victim was selected. However, the default errno may be overwritten in two cases: gc_more and BG_GC -> FG_GC. We should return consistent errno in such cases. Signed-off-by:
Weichao Guo <guoweichao@huawei.com> Signed-off-by:
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Chao Yu authored
Last kernel has already support new syscall statx() in commit a528d35e ("statx: Add a system call to make enhanced file info available"), with this interface we can show more file info including file creation and some attribute flags to user. This patch tries to support this functionality. Signed-off-by:
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Jaegeuk Kim authored
This patch fixes missing inode flag loaded from disk, reported by Tom. [tom@localhost ~]$ sudo mount /dev/loop0 /mnt/ [tom@localhost ~]$ sudo chown tom:tom /mnt/ [tom@localhost ~]$ touch /mnt/testfile [tom@localhost ~]$ sudo chattr +i /mnt/testfile [tom@localhost ~]$ echo test > /mnt/testfile bash: /mnt/testfile: Operation not permitted [tom@localhost ~]$ rm /mnt/testfile rm: cannot remove '/mnt/testfile': Operation not permitted [tom@localhost ~]$ sudo umount /mnt/ [tom@localhost ~]$ sudo mount /dev/loop0 /mnt/ [tom@localhost ~]$ lsattr /mnt/testfile ----i-------------- /mnt/testfile [tom@localhost ~]$ echo test > /mnt/testfile [tom@localhost ~]$ rm /mnt/testfile [tom@localhost ~]$ sudo umount /mnt/ Cc: stable@vger.kernel.org Reported-by:
Tom Yan <tom.ty89@outlook.com> Signed-off-by:
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