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authorAl Viro <viro@zeniv.linux.org.uk>2010-07-25 02:31:46 +0400
committerAl Viro <viro@zeniv.linux.org.uk>2010-08-10 00:49:02 +0400
commitdca332528bc69e05f67161e1ed59929633d5e63d (patch)
tree0ec5576d52bead57c73983d2412cfe71814b5f8d /fs/dcache.c
parent7a4dec53897ecd3367efb1e12fe8a4edc47dc0e9 (diff)
downloadlinux-dca332528bc69e05f67161e1ed59929633d5e63d.tar.xz
no need for list_for_each_entry_safe()/resetting with superblock list
just delay __put_super() a bit Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/dcache.c')
-rw-r--r--fs/dcache.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/fs/dcache.c b/fs/dcache.c
index caf08574982f..9f2c13417969 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -536,7 +536,7 @@ restart:
*/
static void prune_dcache(int count)
{
- struct super_block *sb, *n;
+ struct super_block *sb, *p = NULL;
int w_count;
int unused = dentry_stat.nr_unused;
int prune_ratio;
@@ -550,7 +550,7 @@ static void prune_dcache(int count)
else
prune_ratio = unused / count;
spin_lock(&sb_lock);
- list_for_each_entry_safe(sb, n, &super_blocks, s_list) {
+ list_for_each_entry(sb, &super_blocks, s_list) {
if (list_empty(&sb->s_instances))
continue;
if (sb->s_nr_dentry_unused == 0)
@@ -590,14 +590,16 @@ static void prune_dcache(int count)
up_read(&sb->s_umount);
}
spin_lock(&sb_lock);
- /* lock was dropped, must reset next */
- list_safe_reset_next(sb, n, s_list);
+ if (p)
+ __put_super(p);
count -= pruned;
- __put_super(sb);
+ p = sb;
/* more work left to do? */
if (count <= 0)
break;
}
+ if (p)
+ __put_super(p);
spin_unlock(&sb_lock);
spin_unlock(&dcache_lock);
}