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(parent: acd236e) | patch
ext4: serialize dio nonlocked reads with defrag workers
authorDmitry Monakhov <dmonakhov@openvz.org>
Sat, 29 Sep 2012 04:41:21 +0000 (00:41 -0400)
committerTheodore Ts'o <tytso@mit.edu>
Sat, 29 Sep 2012 04:41:21 +0000 (00:41 -0400)
commit7e82478e2791eee446bb6ac03a49b57511575a6a
tree5f39f51868f60f8be94ca7e811d34bba443ef288tree | snapshot
parentacd236ea5d68be717973188e0b4b0fd4ac29c30ecommit | diff
ext4: serialize dio nonlocked reads with defrag workers

Inode's block defrag and ext4_change_inode_journal_flag() may
affect nonlocked DIO reads result, so proper synchronization
required.

- Add missed inode_dio_wait() calls where appropriate
- Check inode state under extra i_dio_count reference.

Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
fs/ext4/ext4.h diff | blob | history
fs/ext4/indirect.c diff | blob | history
fs/ext4/inode.c diff | blob | history
fs/ext4/move_extent.c diff | blob | history
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