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vfs: renumber DCACHE_xyz flags, remove some stale ones

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Gcc tends to generate better code with small integers, including the
DCACHE_xyz flag tests - so move the common ones to be first in the list.
Also just remove the unused DCACHE_INOTIFY_PARENT_WATCHED and
DCACHE_AUTOFS_PENDING values, their users no longer exists in the source
tree.

And add a "unlikely()" to the DCACHE_OP_COMPARE test, since we want the
common case to be a nice straight-line fall-through.

Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Linus Torvalds 2011-08-06 22:41:50 -07:00
commit 830c0f0edc
2 changed files with 14 additions and 18 deletions
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2
fs/dcache.c
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@ -1729,7 +1729,7 @@ seqretry:
*/
if (read_seqcount_retry(&dentry->d_seq, *seq))
goto seqretry;
if (parent->d_flags & DCACHE_OP_COMPARE) {
if (unlikely(parent->d_flags & DCACHE_OP_COMPARE)) {
if (parent->d_op->d_compare(parent, *inode,
dentry, i,
tlen, tname, name))