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| author | David Howells <dhowells@redhat.com> | 2018-04-04 15:41:26 +0300 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2018-04-04 15:41:26 +0300 |
| commit | d0fb31ecda2c3c6092d0c2a46a6a72653e7dcabb (patch) | |
| tree | af770d5997993875f953f637841ce331ff1f6097 | |
| parent | b27ddd46245311850f850024df54d0537506f3c1 (diff) | |
| download | linux-d0fb31ecda2c3c6092d0c2a46a6a72653e7dcabb.tar.xz | |
fscache: Detect multiple relinquishment of a cookie
Report if an fscache cookie is relinquished multiple times by the netfs.
Signed-off-by: David <dhowells@redhat.com>
| -rw-r--r-- | fs/fscache/cookie.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/fscache/cookie.c b/fs/fscache/cookie.c index d705125665f0..98d22f495cd8 100644 --- a/fs/fscache/cookie.c +++ b/fs/fscache/cookie.c @@ -602,7 +602,8 @@ void __fscache_relinquish_cookie(struct fscache_cookie *cookie, bool retire) atomic_read(&cookie->n_active), retire); /* No further netfs-accessing operations on this cookie permitted */ - set_bit(FSCACHE_COOKIE_RELINQUISHED, &cookie->flags); + if (test_and_set_bit(FSCACHE_COOKIE_RELINQUISHED, &cookie->flags)) + BUG(); __fscache_disable_cookie(cookie, retire); |