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vfs: make lremovexattr retry once on ESTALE error 

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 12:10:18 -05:00 committed by Al Viro
parent 12f0621299
commit b729d75d19
1 changed files with 7 additions and 2 deletions
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9
fs/xattr.c
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@ -668,8 +668,9 @@ SYSCALL_DEFINE2(lremovexattr, const char __user *, pathname,
{
struct path path;
int error;
error = user_lpath(pathname, &path);
unsigned int lookup_flags = 0;
retry:
error = user_path_at(AT_FDCWD, pathname, lookup_flags, &path);
if (error)
return error;
error = mnt_want_write(path.mnt);
@ -678,6 +679,10 @@ SYSCALL_DEFINE2(lremovexattr, const char __user *, pathname,
mnt_drop_write(path.mnt);
}
path_put(&path);
if (retry_estale(error, lookup_flags)) {
lookup_flags |= LOOKUP_REVAL;
goto retry;
}
return error;
}