diff options
| author | Daniel Drake <dsd@laptop.org> | 2010-10-07 19:14:02 +0100 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2010-10-25 00:57:19 +0100 |
| commit | 65e5a0e18e5fb5bc6cfabd8ef4b9fc1c8569ba62 (patch) | |
| tree | 0790ae9e682c5de24b0ffd7111a0bfab4f03aab3 /fs/jffs2/nodelist.c | |
| parent | b46daf7eb1a143169699a8f9df634aa751a6ddde (diff) | |
| download | op-kernel-dev-65e5a0e18e5fb5bc6cfabd8ef4b9fc1c8569ba62.zip op-kernel-dev-65e5a0e18e5fb5bc6cfabd8ef4b9fc1c8569ba62.tar.gz | |
jffs2: Dynamically choose inocache hash size
When JFFS2 is used for large volumes, the mount times are quite long.
Increasing the hash size provides a significant speed boost on the OLPC
XO-1 laptop.
Add logic that dynamically selects a hash size based on the size of
the medium. A 64mb medium will result in a hash size of 128, and a 512mb
medium will result in a hash size of 1024.
Signed-off-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'fs/jffs2/nodelist.c')
| -rw-r--r-- | fs/jffs2/nodelist.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/fs/jffs2/nodelist.c b/fs/jffs2/nodelist.c index af02bd1..5e03233 100644 --- a/fs/jffs2/nodelist.c +++ b/fs/jffs2/nodelist.c @@ -420,7 +420,7 @@ struct jffs2_inode_cache *jffs2_get_ino_cache(struct jffs2_sb_info *c, uint32_t { struct jffs2_inode_cache *ret; - ret = c->inocache_list[ino % INOCACHE_HASHSIZE]; + ret = c->inocache_list[ino % c->inocache_hashsize]; while (ret && ret->ino < ino) { ret = ret->next; } @@ -441,7 +441,7 @@ void jffs2_add_ino_cache (struct jffs2_sb_info *c, struct jffs2_inode_cache *new dbg_inocache("add %p (ino #%u)\n", new, new->ino); - prev = &c->inocache_list[new->ino % INOCACHE_HASHSIZE]; + prev = &c->inocache_list[new->ino % c->inocache_hashsize]; while ((*prev) && (*prev)->ino < new->ino) { prev = &(*prev)->next; @@ -462,7 +462,7 @@ void jffs2_del_ino_cache(struct jffs2_sb_info *c, struct jffs2_inode_cache *old) dbg_inocache("del %p (ino #%u)\n", old, old->ino); spin_lock(&c->inocache_lock); - prev = &c->inocache_list[old->ino % INOCACHE_HASHSIZE]; + prev = &c->inocache_list[old->ino % c->inocache_hashsize]; while ((*prev) && (*prev)->ino < old->ino) { prev = &(*prev)->next; @@ -487,7 +487,7 @@ void jffs2_free_ino_caches(struct jffs2_sb_info *c) int i; struct jffs2_inode_cache *this, *next; - for (i=0; i<INOCACHE_HASHSIZE; i++) { + for (i=0; i < c->inocache_hashsize; i++) { this = c->inocache_list[i]; while (this) { next = this->next; |
