vfs: embed struct filename inside of names_cache allocation if possible

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In the common case where a name is much smaller than PATH_MAX, an extra
allocation for struct filename is unnecessary. Before allocating a
separate one, try to embed the struct filename inside the buffer first. If
it turns out that that's not long enough, then fall back to allocating a
separate struct filename and redoing the copy.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

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Jeff Layton 2012-10-10 16:43:13 -04:00 • committed by Al Viro

parent adb5c2473d

commit 7950e3852a

2 changed files with 50 additions and 20 deletions

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69

fs/namei.c

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1

include/linux/fs.h

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