tree f170e47fa9fd25bad3a5ce6996fdfbd86daa3706
parent 90b436657efb1a6d73bf0677fedee8a8c77032f6
author Artem Bityutskiy <artem.bityutskiy@linux.intel.com> 1338506772 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1338511768 -0700

fat: mark superblock as dirty less often

Preparation for further changes.  It touches few functions in fatent.c and
prevents them from marking the superblock as dirty unnecessarily often.
Namely, instead of marking it as dirty in the internal tight loops - do it
only once at the end of the functions.  And instead of marking it as dirty
while holding the FAT table lock, do it outside the lock.

The reason for this patch is that marking the superblock as dirty will
soon become a little bit heavier operation, so it is cleaner to do this
only when it is necessary.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>