diff options
| -rw-r--r-- | fs/xfs/xfs_iomap.c | 4 | ||||
| -rw-r--r-- | fs/xfs/xfs_mount.h | 15 | ||||
| -rw-r--r-- | fs/xfs/xfs_sysfs.c | 14 |
3 files changed, 19 insertions, 14 deletions
diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c index 4009e7c8b52b..41662fb14e87 100644 --- a/fs/xfs/xfs_iomap.c +++ b/fs/xfs/xfs_iomap.c @@ -1078,6 +1078,10 @@ xfs_file_iomap_end_delalloc( xfs_fileoff_t end_fsb; int error = 0; + /* behave as if the write failed if drop writes is enabled */ + if (xfs_mp_drop_writes(mp)) + written = 0; + /* * start_fsb refers to the first unused block after a short write. If * nothing was written, round offset down to point at the first block in diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h index 20e2981a4aec..6db6fd6b82b0 100644 --- a/fs/xfs/xfs_mount.h +++ b/fs/xfs/xfs_mount.h @@ -200,11 +200,12 @@ typedef struct xfs_mount { /* * DEBUG mode instrumentation to test and/or trigger delayed allocation * block killing in the event of failed writes. When enabled, all - * buffered writes are forced to fail. 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. + * 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. */ - bool m_fail_writes; + bool m_drop_writes; #endif } xfs_mount_t; @@ -325,13 +326,13 @@ xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d) #ifdef DEBUG static inline bool -xfs_mp_fail_writes(struct xfs_mount *mp) +xfs_mp_drop_writes(struct xfs_mount *mp) { - return mp->m_fail_writes; + return mp->m_drop_writes; } #else static inline bool -xfs_mp_fail_writes(struct xfs_mount *mp) +xfs_mp_drop_writes(struct xfs_mount *mp) { return 0; } diff --git a/fs/xfs/xfs_sysfs.c b/fs/xfs/xfs_sysfs.c index de6195e38910..80ac15fb9638 100644 --- a/fs/xfs/xfs_sysfs.c +++ b/fs/xfs/xfs_sysfs.c @@ -93,7 +93,7 @@ to_mp(struct kobject *kobject) #ifdef DEBUG STATIC ssize_t -fail_writes_store( +drop_writes_store( struct kobject *kobject, const char *buf, size_t count) @@ -107,9 +107,9 @@ fail_writes_store( return ret; if (val == 1) - mp->m_fail_writes = true; + mp->m_drop_writes = true; else if (val == 0) - mp->m_fail_writes = false; + mp->m_drop_writes = false; else return -EINVAL; @@ -117,21 +117,21 @@ fail_writes_store( } STATIC ssize_t -fail_writes_show( +drop_writes_show( struct kobject *kobject, char *buf) { struct xfs_mount *mp = to_mp(kobject); - return snprintf(buf, PAGE_SIZE, "%d\n", mp->m_fail_writes ? 1 : 0); + return snprintf(buf, PAGE_SIZE, "%d\n", mp->m_drop_writes ? 1 : 0); } -XFS_SYSFS_ATTR_RW(fail_writes); +XFS_SYSFS_ATTR_RW(drop_writes); #endif /* DEBUG */ static struct attribute *xfs_mp_attrs[] = { #ifdef DEBUG - ATTR_LIST(fail_writes), + ATTR_LIST(drop_writes), #endif NULL, }; |