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vfs: make lgetxattr retry once on ESTALE

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Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Jeff Layton 2012-12-11 12:10:16 -05:00 • committed by Al Viro
parent 60e66b48ca
commit 3a3e159dbf
1 changed files with 7 additions and 2 deletions
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9
fs/xattr.c
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@ -505,12 +505,17 @@ SYSCALL_DEFINE4(lgetxattr, const char __user *, pathname,
{ {
struct path path; struct path path;
ssize_t error; ssize_t error;
unsigned int lookup_flags = 0;
error = user_lpath(pathname, &path); retry:
error = user_path_at(AT_FDCWD, pathname, lookup_flags, &path);
if (error) if (error)
return error; return error;
error = getxattr(path.dentry, name, value, size); error = getxattr(path.dentry, name, value, size);
path_put(&path); path_put(&path);
if (retry_estale(error, lookup_flags)) {
lookup_flags |= LOOKUP_REVAL;
goto retry;
}
return error; return error;
} }