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authorAl Viro <viro@zeniv.linux.org.uk>2016-05-12 20:02:09 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2016-05-12 20:08:40 -0400
commit323ee8fc544d407eb053471b9607f95f987f5f12 (patch)
tree7185ea5c3d7b5d08492bd93bb714bc5338b5355c /fs/hfsplus/hfsplus_fs.h
parent552a9d489f1412beb5914f0c64a54d921a9c6624 (diff)
downloadlinux-323ee8fc544d407eb053471b9607f95f987f5f12.tar.bz2
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/hfsplus_fs.h')
-rw-r--r--fs/hfsplus/hfsplus_fs.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/hfsplus/hfsplus_fs.h b/fs/hfsplus/hfsplus_fs.h
index f91a1faf819e..fdc3446d934a 100644
--- a/fs/hfsplus/hfsplus_fs.h
+++ b/fs/hfsplus/hfsplus_fs.h
@@ -244,6 +244,7 @@ struct hfsplus_inode_info {
u8 userflags; /* BSD user file flags */
u32 subfolders; /* Subfolder count (HFSX only) */
struct list_head open_dir_list;
+ spinlock_t open_dir_lock;
loff_t phys_size;
struct inode vfs_inode;