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| author | Christoph Hellwig <hch@tuxera.com> | 2010-10-01 05:45:08 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2010-10-01 05:45:08 +0200 |
| commit | 7ac9fb9c2a50963b699b3548e6f00698c1554dc6 (patch) | |
| tree | 3660bfb2985c65838b5969694e54043ae6639b3a /fs/hfsplus/super.c | |
| parent | 58a818f532e83f337689358c102ba2048d1b37f5 (diff) | |
| download | linux-7ac9fb9c2a50963b699b3548e6f00698c1554dc6.tar.gz linux-7ac9fb9c2a50963b699b3548e6f00698c1554dc6.tar.bz2 linux-7ac9fb9c2a50963b699b3548e6f00698c1554dc6.zip | |
hfsplus: add per-superblock lock for volume header updates
Lock updates to the mutal fields in the volume header, and document the
locing in the hfsplus_sb_info structure.
Signed-off-by: Christoph Hellwig <hch@tuxera.com>
Diffstat (limited to 'fs/hfsplus/super.c')
| -rw-r--r-- | fs/hfsplus/super.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c index 923f385b32ca..b766c170e4d8 100644 --- a/fs/hfsplus/super.c +++ b/fs/hfsplus/super.c @@ -160,6 +160,7 @@ int hfsplus_sync_fs(struct super_block *sb, int wait) dprint(DBG_SUPER, "hfsplus_write_super\n"); + mutex_lock(&sbi->vh_mutex); mutex_lock(&sbi->alloc_mutex); sb->s_dirt = 0; @@ -194,6 +195,7 @@ int hfsplus_sync_fs(struct super_block *sb, int wait) sbi->flags &= ~HFSPLUS_SB_WRITEBACKUP; } mutex_unlock(&sbi->alloc_mutex); + mutex_unlock(&sbi->vh_mutex); return 0; } @@ -319,6 +321,7 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent) sb->s_fs_info = sbi; mutex_init(&sbi->alloc_mutex); + mutex_init(&sbi->vh_mutex); hfsplus_fill_defaults(sbi); if (!hfsplus_parse_options(data, sbi)) { printk(KERN_ERR "hfs: unable to parse mount options\n"); @@ -453,9 +456,13 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent) if (!sbi->hidden_dir) { printk(KERN_DEBUG "hfs: create hidden dir...\n"); + + mutex_lock(&sbi->vh_mutex); sbi->hidden_dir = hfsplus_new_inode(sb, S_IFDIR); hfsplus_create_cat(sbi->hidden_dir->i_ino, sb->s_root->d_inode, &str, sbi->hidden_dir); + mutex_unlock(&sbi->vh_mutex); + mark_inode_dirty(sbi->hidden_dir); } out: |