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| author | Darrick J. Wong <djwong@kernel.org> | 2022-11-29 02:24:36 +0100 |
|---|---|---|
| committer | Darrick J. Wong <djwong@kernel.org> | 2022-11-29 02:54:49 +0100 |
| commit | 254e3459285cbf2174350bbc0051e475e1bc5196 (patch) | |
| tree | b67e276af1fbba40cfc3c62803e60aa7a42bdb06 /fs/xfs/xfs_error.c | |
| parent | xfs: add debug knob to slow down writeback for fun (diff) | |
| download | linux-254e3459285cbf2174350bbc0051e475e1bc5196.tar.xz linux-254e3459285cbf2174350bbc0051e475e1bc5196.zip | |
xfs: add debug knob to slow down write for fun
Add a new error injection knob so that we can arbitrarily slow down
pagecache writes to test for race conditions and aberrant reclaim
behavior if the writeback mechanisms are slow to issue writeback. This
will enable functional testing for the ifork sequence counters
introduced in commit 304a68b9c63b ("xfs: use iomap_valid method to
detect stale cached iomaps") that fixes write racing with reclaim
writeback.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Diffstat (limited to 'fs/xfs/xfs_error.c')
| -rw-r--r-- | fs/xfs/xfs_error.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/xfs/xfs_error.c b/fs/xfs/xfs_error.c index 2d6e3c718e03..713341d246d1 100644 --- a/fs/xfs/xfs_error.c +++ b/fs/xfs/xfs_error.c @@ -61,6 +61,7 @@ static unsigned int xfs_errortag_random_default[] = { XFS_RANDOM_DA_LEAF_SPLIT, XFS_RANDOM_ATTR_LEAF_TO_NODE, XFS_RANDOM_WB_DELAY_MS, + XFS_RANDOM_WRITE_DELAY_MS, }; struct xfs_errortag_attr { @@ -177,6 +178,7 @@ XFS_ERRORTAG_ATTR_RW(larp, XFS_ERRTAG_LARP); XFS_ERRORTAG_ATTR_RW(da_leaf_split, XFS_ERRTAG_DA_LEAF_SPLIT); XFS_ERRORTAG_ATTR_RW(attr_leaf_to_node, XFS_ERRTAG_ATTR_LEAF_TO_NODE); XFS_ERRORTAG_ATTR_RW(wb_delay_ms, XFS_ERRTAG_WB_DELAY_MS); +XFS_ERRORTAG_ATTR_RW(write_delay_ms, XFS_ERRTAG_WRITE_DELAY_MS); static struct attribute *xfs_errortag_attrs[] = { XFS_ERRORTAG_ATTR_LIST(noerror), @@ -221,6 +223,7 @@ static struct attribute *xfs_errortag_attrs[] = { XFS_ERRORTAG_ATTR_LIST(da_leaf_split), XFS_ERRORTAG_ATTR_LIST(attr_leaf_to_node), XFS_ERRORTAG_ATTR_LIST(wb_delay_ms), + XFS_ERRORTAG_ATTR_LIST(write_delay_ms), NULL, }; ATTRIBUTE_GROUPS(xfs_errortag); |