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ext3: Use bitops to read/modify EXT3_I(inode)->i_state

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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>
This commit is contained in:
Jan Kara
2010-01-06 21:58:48 +01:00
parent 26245c949c
commit 9df93939b7
5 changed files with 44 additions and 27 deletions
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2
include/linux/ext3_fs_i.h
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@@ -87,7 +87,7 @@ struct ext3_inode_info {
* near to their parent directory's inode.
*/
__u32 i_block_group;
__u32 i_state; /* Dynamic state flags for ext3 */
unsigned long i_state; /* Dynamic state flags for ext3 */
/* block reservation info */
struct ext3_block_alloc_info *i_block_alloc_info;