https://github.com/torvalds/linux
This just replaces the dentry count/lock combination with the lockref structure that contains both a count and a spinlock, and does the mechanical conversion to use the lockref infrastructure. There are no semantic changes here, it's purely syntactic. The reference lockref implementation uses the spinlock exactly the same way that the old dcache code did, and the bulk of this patch is just expanding the internal "d_count" use in the dcache code to use "d_lockref.count" instead. This is purely preparation for the real change to make the reference count updates be lockless during the 3.12 merge window. [ As with the previous commit, this is a rewritten version of a concept originally from Waiman, so credit goes to him, blame for any errors goes to me. Waiman's patch had some semantic differences for taking advantage of the lockless update in dget_parent(), while this patch is intentionally a pure search-and-replace change with no semantic changes. - Linus ] Signed-off-by: Waiman Long <Waiman.Long@hp.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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vfs: make the dentry cache use the lockref infrastructure
File | Mode | Size |
---|---|---|
.gitignore | -rw-r--r-- | 29 bytes |
Makefile | -rw-r--r-- | 1.2 KB |
bpf-direct.c | -rw-r--r-- | 4.9 KB |
bpf-fancy.c | -rw-r--r-- | 2.4 KB |
bpf-helper.c | -rw-r--r-- | 2.2 KB |
bpf-helper.h | -rw-r--r-- | 7.2 KB |
dropper.c | -rw-r--r-- | 1.8 KB |
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Computing file changes ...