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| author | Jeff Layton <jlayton@redhat.com> | 2012-12-11 12:10:14 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-12-20 18:50:07 -0500 |
| commit | 96948fc6069b68380abac2944b8b02b43a2e2057 (patch) | |
| tree | 7183ec09a0c317d2b6fbe71ca3e15dfab8e107cd /fs | |
| parent | 99a5df37a03c99e57d0da4f847a515b658963fbb (diff) | |
| download | lwn-96948fc6069b68380abac2944b8b02b43a2e2057.tar.gz lwn-96948fc6069b68380abac2944b8b02b43a2e2057.zip | |
vfs: fix user_statfs to retry once on ESTALE errors
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/statfs.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/fs/statfs.c b/fs/statfs.c index f8e832e6f0a2..c219e733f553 100644 --- a/fs/statfs.c +++ b/fs/statfs.c @@ -77,10 +77,17 @@ EXPORT_SYMBOL(vfs_statfs); int user_statfs(const char __user *pathname, struct kstatfs *st) { struct path path; - int error = user_path_at(AT_FDCWD, pathname, LOOKUP_FOLLOW|LOOKUP_AUTOMOUNT, &path); + int error; + unsigned int lookup_flags = LOOKUP_FOLLOW|LOOKUP_AUTOMOUNT; +retry: + error = user_path_at(AT_FDCWD, pathname, lookup_flags, &path); if (!error) { error = vfs_statfs(&path, st); path_put(&path); + if (retry_estale(error, lookup_flags)) { + lookup_flags |= LOOKUP_REVAL; + goto retry; + } } return error; } |