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authorGeorge Spelvin <linux@sciencehorizons.net>2016-05-20 08:41:37 -0400
committerGeorge Spelvin <linux@sciencehorizons.net>2016-05-28 15:42:50 -0400
commitfcfd2fbf22d2587196890103d41e3d554c47da0e (patch)
treed8e67346881f72e06782c08305b88c8ce167b698 /fs/seq_file.c
parentf4bcbe792b8f434e32487cff9d9e30ab45a3ce02 (diff)
downloadlwn-fcfd2fbf22d2587196890103d41e3d554c47da0e.tar.gz
lwn-fcfd2fbf22d2587196890103d41e3d554c47da0e.zip
fs/namei.c: Add hashlen_string() function
We'd like to make more use of the highly-optimized dcache hash functions throughout the kernel, rather than have every subsystem create its own, and a function that hashes basic null-terminated strings is required for that. (The name is to emphasize that it returns both hash and length.) It's actually useful in the dcache itself, specifically d_alloc_name(). Other uses in the next patch. full_name_hash() is also tweaked to make it more generally useful: 1) Take a "char *" rather than "unsigned char *" argument, to be consistent with hash_name(). 2) Handle zero-length inputs. If we want more callers, we don't want to make them worry about corner cases. Signed-off-by: George Spelvin <linux@sciencehorizons.net>
Diffstat (limited to 'fs/seq_file.c')
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