6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: linke li <lilinke99@xxxxxx> [ Upstream commit 8bfb40be31ddea0cb4664b352e1797cfe6c91976 ] Currently, the __d_clear_type_and_inode() writes the value flags to dentry->d_flags, then immediately re-reads it in order to use it in a if statement. This re-read is useless because no other update to dentry->d_flags can occur at this point. This commit therefore re-use flags in the if statement instead of re-reading dentry->d_flags. Signed-off-by: linke li <lilinke99@xxxxxx> Link: https://lore.kernel.org/r/tencent_5E187BD0A61BA28605E85405F15228254D0A@xxxxxx Reviewed-by: Jan Kara <jack@xxxxxxx> Signed-off-by: Christian Brauner <brauner@xxxxxxxxxx> Stable-dep-of: aabfe57ebaa7 ("vfs: don't mod negative dentry count when on shrinker list") Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- fs/dcache.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/dcache.c b/fs/dcache.c index 9ae808fba517b..fca3e7490d091 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -356,7 +356,7 @@ static inline void __d_clear_type_and_inode(struct dentry *dentry) flags &= ~(DCACHE_ENTRY_TYPE | DCACHE_FALLTHRU); WRITE_ONCE(dentry->d_flags, flags); dentry->d_inode = NULL; - if (dentry->d_flags & DCACHE_LRU_LIST) + if (flags & DCACHE_LRU_LIST) this_cpu_inc(nr_dentry_negative); } -- 2.43.0
