[PATCH] fs/open: use unlikely modification of filp_close anomaly detection branch

hulk inclusion category: performance bugzilla: https://gitee.com/openeuler/kernel/issues/IA5PIS

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The probability of obtaining file_count() equal to 0 in filp_close() is relatively small. Using unlikely modification can improve efficiency.

Signed-off-by: liwei liwei728@huawei.com --- fs/open.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/open.c b/fs/open.c index 8092178ceab0..68de475df5ec 100644 --- a/fs/open.c +++ b/fs/open.c @@ -1285,7 +1285,7 @@ int filp_close(struct file *filp, fl_owner_t id) { int retval = 0;

- if (!file_count(filp)) { + if (unlikely(!file_count(filp))) { printk(KERN_ERR "VFS: Close: file count is 0\n"); return 0; }