fs: sys_sync fix

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s_syncing livelock avoidance was breaking data integrity guarantee of
sys_sync, by allowing sys_sync to skip writing or waiting for superblocks
if there is a concurrent sys_sync happening.

This livelock avoidance is much less important now that we don't have the
get_super_to_sync() call after every sb that we sync.  This was replaced
by __put_super_and_need_restart.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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Nick Piggin 2009-01-06 14:40:26 -08:00 • committed by Linus Torvalds

parent 38f2197766

commit 856bf4d717

2 changed files with 1 additions and 20 deletions

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fs/fs-writeback.c

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