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authorRusty Russell <rusty@rustcorp.com.au>2007-07-17 04:03:17 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-17 10:23:00 -0700
commit8e1f936b73150f5095448a0fee6d4f30a1f9001d (patch)
tree0996203e35c629e2ec243d128c7bd91ecd74d24a /fs/inode.c
parent5ad333eb66ff1e52a87639822ae088577669dcf9 (diff)
mm: clean up and kernelify shrinker registration
I can never remember what the function to register to receive VM pressure is called. I have to trace down from __alloc_pages() to find it. It's called "set_shrinker()", and it needs Your Help. 1) Don't hide struct shrinker. It contains no magic. 2) Don't allocate "struct shrinker". It's not helpful. 3) Call them "register_shrinker" and "unregister_shrinker". 4) Call the function "shrink" not "shrinker". 5) Reduce the 17 lines of waffly comments to 13, but document it properly. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: David Chinner <dgc@sgi.com> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/inode.c')
-rw-r--r--fs/inode.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/inode.c b/fs/inode.c
index 47b87b071de..320e088d0b2 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -462,6 +462,11 @@ static int shrink_icache_memory(int nr, gfp_t gfp_mask)
return (inodes_stat.nr_unused / 100) * sysctl_vfs_cache_pressure;
}
+static struct shrinker icache_shrinker = {
+ .shrink = shrink_icache_memory,
+ .seeks = DEFAULT_SEEKS,
+};
+
static void __wait_on_freeing_inode(struct inode *inode);
/*
* Called with the inode lock held.
@@ -1385,7 +1390,7 @@ void __init inode_init(unsigned long mempages)
SLAB_MEM_SPREAD),
init_once,
NULL);
- set_shrinker(DEFAULT_SEEKS, shrink_icache_memory);
+ register_shrinker(&icache_shrinker);
/* Hash may have been set up in inode_init_early */
if (!hashdist)