BMC/Intel-BMC/linux.git/fs/ufs/ufs.h, branch dev

ufs: don't touch mtime/ctime of directory being moved

2015-06-16T06:08:34+00:00

See "ext2: Do not update mtime of a moved directory" (and followup in "ext2: fix unbalanced kmap()/kunmap()") for background; this is UFS equivalent - the same problem exists here. Signed-off-by: Al Viro

fs/ufs: restore s_lock mutex

2015-06-16T06:07:38+00:00

Commit 0244756edc4b98c ("ufs: sb mutex merge + mutex_destroy") generated deadlocks in read/write mode on mkdir. This patch partially reverts it keeping fixes by Andrew Morton and mutex_destroy() [AV: fixed a missing bit in ufs_remount()] Signed-off-by: Fabian Frederick Reported-by: Ian Campbell Suggested-by: Jan Kara Cc: Ian Campbell Cc: Evgeniy Dushistov Cc: Alexey Khoroshilov Cc: Roger Pau Monne Cc: Ian Jackson Cc: Al Viro Cc: Signed-off-by: Andrew Morton Signed-off-by: Al Viro

fs/ufs: convert UFSD printk to pr_debug

2014-08-08T22:57:21+00:00

Convert no level printk to pr_debug in UFSD. DEBUG is defined with CONFIG_UFS_DEBUG so pr_debug are emitted here. Also fixing call to UFSD (add;) Signed-off-by: Fabian Frederick Cc: Evgeniy Dushistov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

fs/ufs: use pr_fmt

2014-08-08T22:57:21+00:00

Replace UFS-fs, UFS-fs: and UFS: by pr_fmt with module name "ufs: " Signed-off-by: Fabian Frederick Cc: Evgeniy Dushistov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

ufs: sb mutex merge + mutex_destroy

2014-06-06T23:08:18+00:00

Commit 788257d6101d ("ufs: remove the BKL") replaced BKL with mutex protection using functions lock_ufs, unlock_ufs and struct mutex 'mutex' in sb_info. Commit b6963327e052 ("ufs: drop lock/unlock super") removed lock/unlock super and added struct mutex 's_lock' in sb_info. Those 2 mutexes are generally locked/unlocked at the same time except in allocation (balloc, ialloc). This patch merges the 2 mutexes and propagates first commit solution. It also adds mutex destruction before kfree during ufs_fill_super failure and ufs_put_super. [akpm@linux-foundation.org: avoid ifdefs, return -EROFS not -EINVAL] Signed-off-by: Fabian Frederick Cc: Evgeniy Dushistov Cc: "Chen, Jet" Cc: Wu Fengguang Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

ufs: drop lock/unlock super

2012-10-10T03:33:39+00:00

Removed lock/unlock super. Added a new private s_lock mutex. Signed-off-by: Marco Stornelli Signed-off-by: Al Viro

fs/ufs: get rid of write_super

2012-07-22T19:58:16+00:00

This patch makes UFS stop using the VFS '->write_super()' method along with the 's_dirt' superblock flag, because they are on their way out. The way we implement this is that we schedule a delay job instead relying on 's_dirt' and '->write_super()'. The whole "superblock write-out" VFS infrastructure is served by the 'sync_supers()' kernel thread, which wakes up every 5 (by default) seconds and writes out all dirty superblocks using the '->write_super()' call-back. But the problem with this thread is that it wastes power by waking up the system every 5 seconds, even if there are no diry superblocks, or there are no client file-systems which would need this (e.g., btrfs does not use '->write_super()'). So we want to kill it completely and thus, we need to make file-systems to stop using the '->write_super()' VFS service, and then remove it together with the kernel thread. Tested using fsstress from the LTP project. Signed-off-by: Artem Bityutskiy Signed-off-by: Al Viro

ufs: propagate umode_t

2012-01-04T03:54:59+00:00

Signed-off-by: Al Viro

treewide: use printf not attribute__((format(printf,...)))

2011-11-01T00:30:54+00:00

Standardize the style for compiler based printf format verification. Standardized the location of __printf too. Done via script and a little typing. $ grep -rPl --include=*.[ch] -w "__attribute__" * | \ grep -vP "^(tools|scripts|include/linux/compiler-gcc.h)" | \ xargs perl -n -i -e 'local $/; while (<>) { s/\b__attribute__\s*$\s*\(\s*format\s*\(\s*printf\s*,\s*(.+)\s*,\s*(.+)\s*$\s*\)\s*\)/__printf($1, $2)/g ; print; }' [akpm@linux-foundation.org: revert arch bits] Signed-off-by: Joe Perches Cc: "Kirill A. Shutemov" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

ufs: remove the BKL

2011-03-02T21:27:48+00:00

This introduces a new per-superblock mutex in UFS to replace the big kernel lock. I have been careful to avoid nested calls to lock_ufs and to get the lock order right with respect to other mutexes, in particular lock_super. I did not make any attempt to prove that the big kernel lock is not needed in a particular place in the code, which is very possible. The mutex has a significant performance impact, so it is only used on SMP or PREEMPT configurations. As Nick Piggin noticed, any allocation inside of the lock may end up deadlocking when we get to ufs_getfrag_block in the reclaim task, so we now use GFP_NOFS. Signed-off-by: Arnd Bergmann Tested-by: Nick Bowler Cc: Evgeniy Dushistov Cc: Nick Piggin