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authorJan Kara <jack@suse.cz>2010-01-06 21:58:48 +0100
committerJan Kara <jack@suse.cz>2010-03-05 00:20:20 +0100
commit9df93939b735dd273e49cbee290b9f4738500ef4 (patch)
tree2840172239e13d1c0fea496755b8346a9b394336 /fs/ext3/file.c
parent26245c949c8473ea7352907b5a54bc34487eb87f (diff)
downloadop-kernel-dev-9df93939b735dd273e49cbee290b9f4738500ef4.zip
op-kernel-dev-9df93939b735dd273e49cbee290b9f4738500ef4.tar.gz
ext3: Use bitops to read/modify EXT3_I(inode)->i_state
At several places we modify EXT3_I(inode)->i_state without holding i_mutex (ext3_release_file, ext3_bmap, ext3_journalled_writepage, ext3_do_update_inode, ...). These modifications are racy and we can lose updates to i_state. So convert handling of i_state to use bitops which are atomic. Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/ext3/file.c')
-rw-r--r--fs/ext3/file.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/ext3/file.c b/fs/ext3/file.c
index 388bbdf..a86d330 100644
--- a/fs/ext3/file.c
+++ b/fs/ext3/file.c
@@ -33,9 +33,9 @@
*/
static int ext3_release_file (struct inode * inode, struct file * filp)
{
- if (EXT3_I(inode)->i_state & EXT3_STATE_FLUSH_ON_CLOSE) {
+ if (ext3_test_inode_state(inode, EXT3_STATE_FLUSH_ON_CLOSE)) {
filemap_flush(inode->i_mapping);
- EXT3_I(inode)->i_state &= ~EXT3_STATE_FLUSH_ON_CLOSE;
+ ext3_clear_inode_state(inode, EXT3_STATE_FLUSH_ON_CLOSE);
}
/* if we are the last writer on the inode, drop the block reservation */
if ((filp->f_mode & FMODE_WRITE) &&
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