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| author |   Jan Kara <jack@suse.cz> | 2012-07-03 16:45:34 +0200 |
|---|---|---|
| committer |   Al Viro <viro@zeniv.linux.org.uk> | 2012-07-22 23:59:01 +0400 |
| commit | 4ea425b63a3dfeb7707fc7cc7161c11a51e871ed (patch) | |
| tree | f82060e43047424014436f88e808c3f1bba068f3 /fs/read_write.c | |
| parent | vfs: Remove unnecessary flushing of block devices (diff) | |
| download | linux-dev-4ea425b63a3dfeb7707fc7cc7161c11a51e871ed.tar.xz linux-dev-4ea425b63a3dfeb7707fc7cc7161c11a51e871ed.zip | |
vfs: Avoid unnecessary WB_SYNC_NONE writeback during sys_sync and reorder sync passes
wakeup_flusher_threads(0) will queue work doing complete writeback for each
flusher thread. Thus there is not much point in submitting another work doing
full inode WB_SYNC_NONE writeback by writeback_inodes_sb().
After this change it does not make sense to call nonblocking ->sync_fs and
block device flush before calling sync_inodes_sb() because
wakeup_flusher_threads() is completely asynchronous and thus these functions
would be called in parallel with inode writeback running which will effectively
void any work they do. So we move sync_inodes_sb() call before these two
functions.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/read_write.c')
0 files changed, 0 insertions, 0 deletions