#define XFS_ERRTAG_REFCOUNT_FINISH_ONE 25
#define XFS_ERRTAG_BMAP_FINISH_ONE 26
#define XFS_ERRTAG_AG_RESV_CRITICAL 27
+
/*
- * DEBUG mode instrumentation to test and/or trigger delayed allocation
- * block killing in the event of failed writes. When enabled, all
- * buffered writes are silenty dropped and handled as if they failed.
- * All delalloc blocks in the range of the write (including pre-existing
- * delalloc blocks!) are tossed as part of the write failure error
- * handling sequence.
+ * Drop-writes support removed because write error handling cannot trash
+ * pre-existing delalloc extents in any useful way anymore. We retain the
+ * definition so that we can reject it as an invalid value in
+ * xfs_errortag_valid().
*/
#define XFS_ERRTAG_DROP_WRITES 28
#define XFS_ERRTAG_LOG_BAD_CRC 29
#define XFS_RANDOM_REFCOUNT_FINISH_ONE 1
#define XFS_RANDOM_BMAP_FINISH_ONE 1
#define XFS_RANDOM_AG_RESV_CRITICAL 4
-#define XFS_RANDOM_DROP_WRITES 1
#define XFS_RANDOM_LOG_BAD_CRC 1
#define XFS_RANDOM_LOG_ITEM_PIN 1
#define XFS_RANDOM_BUF_LRU_REF 2
XFS_RANDOM_REFCOUNT_FINISH_ONE,
XFS_RANDOM_BMAP_FINISH_ONE,
XFS_RANDOM_AG_RESV_CRITICAL,
- XFS_RANDOM_DROP_WRITES,
+ 0, /* XFS_RANDOM_DROP_WRITES has been removed */
XFS_RANDOM_LOG_BAD_CRC,
XFS_RANDOM_LOG_ITEM_PIN,
XFS_RANDOM_BUF_LRU_REF,
XFS_ERRORTAG_ATTR_RW(refcount_finish_one, XFS_ERRTAG_REFCOUNT_FINISH_ONE);
XFS_ERRORTAG_ATTR_RW(bmap_finish_one, XFS_ERRTAG_BMAP_FINISH_ONE);
XFS_ERRORTAG_ATTR_RW(ag_resv_critical, XFS_ERRTAG_AG_RESV_CRITICAL);
-XFS_ERRORTAG_ATTR_RW(drop_writes, XFS_ERRTAG_DROP_WRITES);
XFS_ERRORTAG_ATTR_RW(log_bad_crc, XFS_ERRTAG_LOG_BAD_CRC);
XFS_ERRORTAG_ATTR_RW(log_item_pin, XFS_ERRTAG_LOG_ITEM_PIN);
XFS_ERRORTAG_ATTR_RW(buf_lru_ref, XFS_ERRTAG_BUF_LRU_REF);
XFS_ERRORTAG_ATTR_LIST(refcount_finish_one),
XFS_ERRORTAG_ATTR_LIST(bmap_finish_one),
XFS_ERRORTAG_ATTR_LIST(ag_resv_critical),
- XFS_ERRORTAG_ATTR_LIST(drop_writes),
XFS_ERRORTAG_ATTR_LIST(log_bad_crc),
XFS_ERRORTAG_ATTR_LIST(log_item_pin),
XFS_ERRORTAG_ATTR_LIST(buf_lru_ref),
kmem_free(mp->m_errortag);
}
+static bool
+xfs_errortag_valid(
+ unsigned int error_tag)
+{
+ if (error_tag >= XFS_ERRTAG_MAX)
+ return false;
+
+ /* Error out removed injection types */
+ if (error_tag == XFS_ERRTAG_DROP_WRITES)
+ return false;
+ return true;
+}
+
bool
xfs_errortag_test(
struct xfs_mount *mp,
if (!mp->m_errortag)
return false;
- ASSERT(error_tag < XFS_ERRTAG_MAX);
+ if (!xfs_errortag_valid(error_tag))
+ return false;
+
randfactor = mp->m_errortag[error_tag];
if (!randfactor || prandom_u32_max(randfactor))
return false;
struct xfs_mount *mp,
unsigned int error_tag)
{
- if (error_tag >= XFS_ERRTAG_MAX)
+ if (!xfs_errortag_valid(error_tag))
return -EINVAL;
return mp->m_errortag[error_tag];
unsigned int error_tag,
unsigned int tag_value)
{
- if (error_tag >= XFS_ERRTAG_MAX)
+ if (!xfs_errortag_valid(error_tag))
return -EINVAL;
mp->m_errortag[error_tag] = tag_value;
{
BUILD_BUG_ON(ARRAY_SIZE(xfs_errortag_random_default) != XFS_ERRTAG_MAX);
- if (error_tag >= XFS_ERRTAG_MAX)
+ if (!xfs_errortag_valid(error_tag))
return -EINVAL;
return xfs_errortag_set(mp, error_tag,
struct xfs_mount *mp = XFS_M(inode->i_sb);
int error;
- /*
- * Behave as if the write failed if drop writes is enabled. Set the NEW
- * flag to force delalloc cleanup.
- */
- if (XFS_TEST_ERROR(false, mp, XFS_ERRTAG_DROP_WRITES)) {
- iomap->flags |= IOMAP_F_NEW;
- written = 0;
- }
-
error = iomap_file_buffered_write_punch_delalloc(inode, iomap, offset,
length, written, &xfs_buffered_write_delalloc_punch);
if (error && !xfs_is_shutdown(mp)) {