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| author | Tahsin Erdogan <tahsin@google.com> | 2016-12-12 16:43:20 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-12-12 18:55:08 -0800 |
| commit | bace9248188f64d7490ebe59fc0733db8b6f0e57 (patch) | |
| tree | 593403191c322c4528f4ec8f568a330a149d2947 /fs/fs-writeback.c | |
| parent | c70b647d381cba1899c953b0016b7dc185892f90 (diff) | |
| download | lwn-bace9248188f64d7490ebe59fc0733db8b6f0e57.tar.gz lwn-bace9248188f64d7490ebe59fc0733db8b6f0e57.zip | |
fs/fs-writeback.c: remove redundant if check
b_more_io non-empty check is already preceded by an opposite check.
Link: http://lkml.kernel.org/r/1478591249-30641-1-git-send-email-tahsin@google.com
Signed-off-by: Tahsin Erdogan <tahsin@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/fs-writeback.c')
| -rw-r--r-- | fs/fs-writeback.c | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index 05713a5da083..ef600591d96f 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -1769,15 +1769,13 @@ static long wb_writeback(struct bdi_writeback *wb, * become available for writeback. Otherwise * we'll just busyloop. */ - if (!list_empty(&wb->b_more_io)) { - trace_writeback_wait(wb, work); - inode = wb_inode(wb->b_more_io.prev); - spin_lock(&inode->i_lock); - spin_unlock(&wb->list_lock); - /* This function drops i_lock... */ - inode_sleep_on_writeback(inode); - spin_lock(&wb->list_lock); - } + trace_writeback_wait(wb, work); + inode = wb_inode(wb->b_more_io.prev); + spin_lock(&inode->i_lock); + spin_unlock(&wb->list_lock); + /* This function drops i_lock... */ + inode_sleep_on_writeback(inode); + spin_lock(&wb->list_lock); } spin_unlock(&wb->list_lock); blk_finish_plug(&plug); |