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authorAl Viro <viro@zeniv.linux.org.uk>2016-05-13 02:02:09 +0200
committerAl Viro <viro@zeniv.linux.org.uk>2016-05-13 02:08:40 +0200
commit323ee8fc544d407eb053471b9607f95f987f5f12 (patch)
tree7185ea5c3d7b5d08492bd93bb714bc5338b5355c /fs/hfsplus/super.c
parenthostfs: switch to ->iterate_shared() (diff)
downloadlinux-323ee8fc544d407eb053471b9607f95f987f5f12.tar.xz
linux-323ee8fc544d407eb053471b9607f95f987f5f12.zip
hfsplus: switch to ->iterate_shared()
We need to protect the list of hfsplus_readdir_data against parallel insertions (in readdir) and removals (in release). Add a spinlock for that. Note that it has nothing to do with protection of hfsplus_readdir_data->key - we have an exclusion between hfsplus_readdir() and hfsplus_delete_cat() on directory lock and between several hfsplus_readdir() for the same struct file on ->f_pos_lock. The spinlock is strictly for list changes. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/hfsplus/super.c')
-rw-r--r--fs/hfsplus/super.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c
index c35911362ff9..755bf30ba1ce 100644
--- a/fs/hfsplus/super.c
+++ b/fs/hfsplus/super.c
@@ -67,6 +67,7 @@ struct inode *hfsplus_iget(struct super_block *sb, unsigned long ino)
return inode;
INIT_LIST_HEAD(&HFSPLUS_I(inode)->open_dir_list);
+ spin_lock_init(&HFSPLUS_I(inode)->open_dir_lock);
mutex_init(&HFSPLUS_I(inode)->extents_lock);
HFSPLUS_I(inode)->flags = 0;
HFSPLUS_I(inode)->extent_state = 0;