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authorChristoph Hellwig <hch@lst.de>2010-10-01 07:41:50 +0400
committerChristoph Hellwig <hch@lst.de>2010-10-01 07:41:50 +0400
commita9fdbf8c6070d49c482e209df7ee93d9ec41ea27 (patch)
treed8e2547819bc1e75f3ac29804e6c5b8b23f65c75 /fs/hfsplus/super.c
parent40bf48afe92fcea61e7e164f0b2599fba8b88124 (diff)
downloadlinux-a9fdbf8c6070d49c482e209df7ee93d9ec41ea27.tar.xz
hfsplus: use alloc_mutex in hfsplus_sync_fs
Use alloc_mutex to protect hfsplus_sync_fs against itself and concurrent allocations, which allows to get rid of lock_super in hfsplus. Note that most fields in the superblock still aren't protected against concurrent allocations, that will follow later. Signed-off-by: Christoph Hellwig <hch@tuxera.com>
Diffstat (limited to 'fs/hfsplus/super.c')
-rw-r--r--fs/hfsplus/super.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c
index 3dc62aa58728..4936642debaa 100644
--- a/fs/hfsplus/super.c
+++ b/fs/hfsplus/super.c
@@ -162,7 +162,7 @@ int hfsplus_sync_fs(struct super_block *sb, int wait)
dprint(DBG_SUPER, "hfsplus_write_super\n");
- lock_super(sb);
+ mutex_lock(&HFSPLUS_SB(sb).alloc_mutex);
sb->s_dirt = 0;
vhdr->free_blocks = cpu_to_be32(HFSPLUS_SB(sb).free_blocks);
@@ -195,7 +195,7 @@ int hfsplus_sync_fs(struct super_block *sb, int wait)
}
HFSPLUS_SB(sb).flags &= ~HFSPLUS_SB_WRITEBACKUP;
}
- unlock_super(sb);
+ mutex_unlock(&HFSPLUS_SB(sb).alloc_mutex);
return 0;
}