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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/super.c
parent01ba687577647beef6c5f2ea59bfb56fac9fcde2 (diff)
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->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/super.c')
-rw-r--r--fs/super.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/fs/super.c b/fs/super.c
index a64f3620879..1905f4af01c 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -420,10 +420,8 @@ restart:
spin_unlock(&sb_lock);
down_read(&sb->s_umount);
- lock_super(sb);
if (sb->s_root && sb->s_dirt)
sb->s_op->write_super(sb);
- unlock_super(sb);
up_read(&sb->s_umount);
spin_lock(&sb_lock);