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author | 2016-06-10 07:51:30 -0700 | |
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committer | 2016-06-10 20:21:46 -0700 | |
commit | 8387ff2577eb9ed245df9a39947f66976c6bcd02 (patch) | |
tree | 79fafcb5777f16e520d1c39e9389039f866b4c6d /fs/ceph/mds_client.c | |
parent | Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledfo... (diff) | |
download | linux-8387ff2577eb9ed245df9a39947f66976c6bcd02.tar.gz linux-8387ff2577eb9ed245df9a39947f66976c6bcd02.tar.bz2 linux-8387ff2577eb9ed245df9a39947f66976c6bcd02.zip |
vfs: make the string hashes salt the hash
We always mixed in the parent pointer into the dentry name hash, but we
did it late at lookup time. It turns out that we can simplify that
lookup-time action by salting the hash with the parent pointer early
instead of late.
A few other users of our string hashes also wanted to mix in their own
pointers into the hash, and those are updated to use the same mechanism.
Hash users that don't have any particular initial salt can just use the
NULL pointer as a no-salt.
Cc: Vegard Nossum <vegard.nossum@oracle.com>
Cc: George Spelvin <linux@sciencehorizons.net>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ceph/mds_client.c')
-rw-r--r-- | fs/ceph/mds_client.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index 2103b823bec0..4e8678a612b6 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -3204,7 +3204,7 @@ static void handle_lease(struct ceph_mds_client *mdsc, WARN_ON(1); goto release; /* hrm... */ } - dname.hash = full_name_hash(dname.name, dname.len); + dname.hash = full_name_hash(parent, dname.name, dname.len); dentry = d_lookup(parent, &dname); dput(parent); if (!dentry) |