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authorLinus Torvalds <torvalds@linux-foundation.org>2016-06-10 07:51:30 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-06-10 20:21:46 -0700
commit8387ff2577eb9ed245df9a39947f66976c6bcd02 (patch)
tree79fafcb5777f16e520d1c39e9389039f866b4c6d /fs/jffs2/summary.c
parentMerge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma (diff)
downloadlinux-dev-8387ff2577eb9ed245df9a39947f66976c6bcd02.tar.xz
linux-dev-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/jffs2/summary.c')
-rw-r--r--fs/jffs2/summary.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/jffs2/summary.c b/fs/jffs2/summary.c
index bc5385471a6e..be7c8a6a5748 100644
--- a/fs/jffs2/summary.c
+++ b/fs/jffs2/summary.c
@@ -476,7 +476,7 @@ static int jffs2_sum_process_sum_data(struct jffs2_sb_info *c, struct jffs2_eras
fd->next = NULL;
fd->version = je32_to_cpu(spd->version);
fd->ino = je32_to_cpu(spd->ino);
- fd->nhash = full_name_hash(fd->name, checkedlen);
+ fd->nhash = full_name_hash(NULL, fd->name, checkedlen);
fd->type = spd->type;
jffs2_add_fd_to_list(c, fd, &ic->scan_dents);