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

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/balloc.c: remove unused variable

2014-10-14T00:18:20+00:00

ucg is defined and set in ufs_bitmap_search but never used. 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

fs/ufs/balloc.c: remove err parameter in ufs_add_fragments

2014-06-06T23:08:10+00:00

err is used in ufs_new_fragments (ufs_add_fragments only callsite) not in ufs_add_fragments. Signed-off-by: Fabian Frederick Cc: Evgeniy Dushistov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

fs/ufs: remove unused ufs_super_block_first pointer

2014-04-07T23:36:16+00:00

Remove occurences of unused pointers to struct ufs_super_block_first that were acquired via ubh_get_usb_first(). Detected by Coverity: CID 139929 - CID 139936, CID 139940. Signed-off-by: Christian Engelmayer Cc: Evgeniy Dushistov 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: fix truncated values handling 64 bit metadata

2011-05-27T00:12:33+00:00

Originally i_lastfrag was 32 bits but then we added support for handling 64 bit metadata and it became a 64 bit variable. That was during 2007, in 54fb996ac15c "[PATCH] ufs2 write: block allocation update". Unfortunately these casts got left behind so the value got truncated to 32 bit again. [akpm@linux-foundation.org: remove now-unneeded min_t/max_t casting] Signed-off-by: Dan Carpenter Cc: Evgeniy Dushistov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

remove SWRITE* I/O types

2010-08-18T05:09:01+00:00

These flags aren't real I/O types, but tell ll_rw_block to always lock the buffer instead of giving up on a failed trylock. Instead add a new write_dirty_buffer helper that implements this semantic and use it from the existing SWRITE* callers. Note that the ll_rw_block code had a bug where it didn't promote WRITE_SYNC_PLUG properly, which this patch fixes. In the ufs code clean up the helper that used to call ll_rw_block to mirror sync_dirty_buffer, which is the function it implements for compound buffers. Signed-off-by: Christoph Hellwig Signed-off-by: Al Viro

ufs: Remove dead quota code

2010-05-24T12:10:19+00:00

UFS quota is non-functional at least since 2.6.12 because dq_op was set to NULL. Since the filesystem exists mainly to allow cooperation with Solaris and quota format isn't standard, just remove the dead code. CC: Evgeniy Dushistov Signed-off-by: Jan Kara