From: Jiachen Zhang zhangjiachen.jaycee@bytedance.com
commit ccc031e26afe60d2a5a3d93dabd9c978210825fb upstream.
[backport for 5.15.y]
The previous commit df8629af2934 ("fuse: always revalidate if exclusive create") ensures that the dentries are revalidated on O_EXCL creates. This commit complements it by also performing revalidation for rename target dentries. Otherwise, a rename target file that only exists in kernel dentry cache but not in the filesystem will result in EEXIST if RENAME_NOREPLACE flag is used.
Signed-off-by: Jiachen Zhang zhangjiachen.jaycee@bytedance.com Signed-off-by: Zhang Tianci zhangtianci.1997@bytedance.com Signed-off-by: Miklos Szeredi mszeredi@redhat.com Signed-off-by: Yang Bo yb203166@antfin.com --- fs/fuse/dir.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c index 80a2181b402b..075266140fac 100644 --- a/fs/fuse/dir.c +++ b/fs/fuse/dir.c @@ -205,7 +205,7 @@ static int fuse_dentry_revalidate(struct dentry *entry, unsigned int flags) if (inode && fuse_is_bad(inode)) goto invalid; else if (time_before64(fuse_dentry_time(entry), get_jiffies_64()) || - (flags & (LOOKUP_EXCL | LOOKUP_REVAL))) { + (flags & (LOOKUP_EXCL | LOOKUP_REVAL | LOOKUP_RENAME_TARGET))) { struct fuse_entry_out outarg; FUSE_ARGS(args); struct fuse_forget_link *forget;