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authorLinus Torvalds <torvalds@linux-foundation.org>2016-06-10 14:51:30 (GMT)
committerLinus Torvalds <torvalds@linux-foundation.org>2016-06-11 03:21:46 (GMT)
commit8387ff2577eb9ed245df9a39947f66976c6bcd02 (patch)
tree79fafcb5777f16e520d1c39e9389039f866b4c6d /Documentation/connector
parent147d9e7bcad3b8d5465f6eea6292731e7f35dee8 (diff)
downloadlinux-8387ff2577eb9ed245df9a39947f66976c6bcd02.tar.xz
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>
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