diff options
| author |   Eric Sandeen <sandeen@sandeen.net> | 2016-07-20 10:54:09 +1000 |
|---|---|---|
| committer |   Dave Chinner <david@fromorbit.com> | 2016-07-20 10:54:09 +1000 |
| commit | 5539d36752eb789f4067a9f88e72177895d56317 (patch) | |
| tree | 0df524b1fbd6708ed3c6f0cd710de40a8084b466 /fs/xfs/xfs_buf_item.c | |
| parent | xfs: remove extraneous buffer flag changes (diff) | |
| download | wireguard-linux-5539d36752eb789f4067a9f88e72177895d56317.tar.xz wireguard-linux-5539d36752eb789f4067a9f88e72177895d56317.zip | |
xfs: don't reset b_retries to 0 on every failure
With the code as it stands today, b_retries never increments because
it gets reset to 0 in the error callback.
Remove that, and fix a similar problem where the first retry time
was constantly being overwritten, which defeated the timeout tunable
as well. We now only set first retry time if a non-zero timeout is
set, to match the behavior of only incrementing retries if a retry
value is set.
This way max retries & timeouts consistently take effect after a
tunable is set, rather than acting retroactively on a buffer which
has failed at some point in the past and has accumulated state from
those prior failures.
Thanks to dchinner for talking through this with me.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_buf_item.c')
| -rw-r--r-- | fs/xfs/xfs_buf_item.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c index 6a2f429391cc..3b19e5219d9a 100644 --- a/fs/xfs/xfs_buf_item.c +++ b/fs/xfs/xfs_buf_item.c @@ -1073,6 +1073,8 @@ xfs_buf_iodone_callback_error( trace_xfs_buf_item_iodone_async(bp, _RET_IP_); ASSERT(bp->b_iodone != NULL); + cfg = xfs_error_get_cfg(mp, XFS_ERR_METADATA, bp->b_error); + /* * If the write was asynchronous then no one will be looking for the * error. If this is the first failure of this type, clear the error @@ -1084,8 +1086,8 @@ xfs_buf_iodone_callback_error( bp->b_last_error != bp->b_error) { bp->b_flags |= (XBF_WRITE | XBF_DONE | XBF_WRITE_FAIL); bp->b_last_error = bp->b_error; - bp->b_retries = 0; - bp->b_first_retry_time = jiffies; + if (cfg->retry_timeout && !bp->b_first_retry_time) + bp->b_first_retry_time = jiffies; xfs_buf_ioerror(bp, 0); xfs_buf_submit(bp); @@ -1096,7 +1098,6 @@ xfs_buf_iodone_callback_error( * Repeated failure on an async write. Take action according to the * error configuration we have been set up to use. */ - cfg = xfs_error_get_cfg(mp, XFS_ERR_METADATA, bp->b_error); if (cfg->max_retries != XFS_ERR_RETRY_FOREVER && ++bp->b_retries > cfg->max_retries) |