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vfs: allow lsetxattr() to retry once on ESTALE errors 

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 12:10:15 -05:00 committed by Al Viro
parent 68f1bb8bb8
commit 49e09e1cc5
1 changed files with 7 additions and 2 deletions
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9
fs/xattr.c
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@ -394,8 +394,9 @@ SYSCALL_DEFINE5(lsetxattr, 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);
@ -404,6 +405,10 @@ SYSCALL_DEFINE5(lsetxattr, 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;
}