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authorChristoph Hellwig <hch@lst.de>2009-05-11 23:35:03 +0200
committerAl Viro <viro@zeniv.linux.org.uk>2009-06-11 21:36:09 -0400
commitebc1ac164560a241d9bf1b7519062910c3f90a01 (patch)
treedb17fd3043b15f8269cce2c2d00213814022fc30 /fs/jffs2
parent01ba687577647beef6c5f2ea59bfb56fac9fcde2 (diff)
downloadblackbird-op-linux-ebc1ac164560a241d9bf1b7519062910c3f90a01.tar.gz
blackbird-op-linux-ebc1ac164560a241d9bf1b7519062910c3f90a01.zip
->write_super lock_super pushdown
Push down lock_super into ->write_super instances and remove it from the caller. Following filesystem don't need ->s_lock in ->write_super and are skipped: * bfs, nilfs2 - no other uses of s_lock and have internal locks in ->write_super * ext2 - uses BKL in ext2_write_super and has internal calls without s_lock * reiserfs - no other uses of s_lock as has reiserfs_write_lock (BKL) in ->write_super * xfs - no other uses of s_lock and uses internal lock (buffer lock on superblock buffer) to serialize ->write_super. Also xfs_fs_write_super is superflous and will go away in the next merge window Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/jffs2')
-rw-r--r--fs/jffs2/super.c15
1 files changed, 9 insertions, 6 deletions
diff --git a/fs/jffs2/super.c b/fs/jffs2/super.c
index a80a50e445e2..f7bfd3ac8bfa 100644
--- a/fs/jffs2/super.c
+++ b/fs/jffs2/super.c
@@ -56,15 +56,18 @@ static void jffs2_i_init_once(void *foo)
static void jffs2_write_super(struct super_block *sb)
{
struct jffs2_sb_info *c = JFFS2_SB_INFO(sb);
+
+ lock_super(sb);
sb->s_dirt = 0;
- if (sb->s_flags & MS_RDONLY)
- return;
+ if (!(sb->s_flags & MS_RDONLY)) {
+ D1(printk(KERN_DEBUG "jffs2_write_super()\n"));
+ jffs2_garbage_collect_trigger(c);
+ jffs2_erase_pending_blocks(c, 0);
+ jffs2_flush_wbuf_gc(c, 0);
+ }
- D1(printk(KERN_DEBUG "jffs2_write_super()\n"));
- jffs2_garbage_collect_trigger(c);
- jffs2_erase_pending_blocks(c, 0);
- jffs2_flush_wbuf_gc(c, 0);
+ unlock_super(sb);
}
static int jffs2_sync_fs(struct super_block *sb, int wait)
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