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| author |  Josef Bacik <jbacik@fusionio.com>
| 2012-09-14 11:22:38 -0400 |
|---|---|---|
| committer |  Chris Mason <chris.mason@fusionio.com>
| 2012-10-04 09:39:58 -0400 |
| commit | 98114659e0d467e2c0ee6f24f2429329328fc312 (patch) | |
| tree | 6286d0eb87f22cc51a6f38503f6e82beb5fc0dfd /drivers/pinctrl | |
| parent | Btrfs: kill obsolete arguments in btrfs_wait_ordered_extents (diff) | |
| download | linux-98114659e0d467e2c0ee6f24f2429329328fc312.tar.gz linux-98114659e0d467e2c0ee6f24f2429329328fc312.tar.bz2 linux-98114659e0d467e2c0ee6f24f2429329328fc312.zip | |
Btrfs: fix race with freeze and free space inodes
So we start our freeze, somebody comes in and does an fsync() on a file
where we have to commit a transaction for whatever reason, and we will
deadlock because the freeze is waiting on FS_FREEZE people to stop writing
to the file system, but the transaction is waiting for its free space inodes
to be written out, which are in turn waiting on sb_start_intwrite while
trying to write the file extents. To fix this we'll just skip the
sb_start_intwrite() if we TRANS_JOIN_NOLOCK since we're being waited on by a
transaction commit so we're safe wrt to freeze and this will keep us from
deadlocking. Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Diffstat (limited to 'drivers/pinctrl')
0 files changed, 0 insertions, 0 deletions