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authorTheodore Ts'o <tytso@mit.edu>2014-04-21 14:37:55 -0400
committerTheodore Ts'o <tytso@mit.edu>2014-04-21 14:37:55 -0400
commit202ee5df38b33f7ea28286807a0b548b49613194 (patch)
tree5737ca8bd3f24d2af02c269e0be06ee255157fc0 /fs/ext4/ext4.h
parentf5ccfe1ddbaf9d923a3ebdadcb1e5e32d83e9c28 (diff)
downloadop-kernel-dev-202ee5df38b33f7ea28286807a0b548b49613194.zip
op-kernel-dev-202ee5df38b33f7ea28286807a0b548b49613194.tar.gz
ext4: add a new spinlock i_raw_lock to protect the ext4's raw inode
To avoid potential data races, use a spinlock which protects the raw (on-disk) inode. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Reviewed-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/ext4/ext4.h')
-rw-r--r--fs/ext4/ext4.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 86c2cda..1d08a1b 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -875,6 +875,8 @@ struct ext4_inode_info {
struct inode vfs_inode;
struct jbd2_inode *jinode;
+ spinlock_t i_raw_lock; /* protects updates to the raw inode */
+
/*
* File creation time. Its function is same as that of
* struct timespec i_{a,c,m}time in the generic inode.
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