diff options
| -rw-r--r-- | fs/xfs/libxfs/xfs_errortag.h | 4 | ||||
| -rw-r--r-- | fs/xfs/xfs_aops.c | 12 | ||||
| -rw-r--r-- | fs/xfs/xfs_error.c | 13 | ||||
| -rw-r--r-- | fs/xfs/xfs_error.h | 22 |
4 files changed, 48 insertions, 3 deletions
diff --git a/fs/xfs/libxfs/xfs_errortag.h b/fs/xfs/libxfs/xfs_errortag.h index 580ccbd5aadc..7c723a36df02 100644 --- a/fs/xfs/libxfs/xfs_errortag.h +++ b/fs/xfs/libxfs/xfs_errortag.h @@ -61,7 +61,8 @@ #define XFS_ERRTAG_LARP 39 #define XFS_ERRTAG_DA_LEAF_SPLIT 40 #define XFS_ERRTAG_ATTR_LEAF_TO_NODE 41 -#define XFS_ERRTAG_MAX 42 +#define XFS_ERRTAG_WB_DELAY_MS 44 +#define XFS_ERRTAG_MAX 45 /* * Random factors for above tags, 1 means always, 2 means 1/2 time, etc. @@ -107,5 +108,6 @@ #define XFS_RANDOM_LARP 1 #define XFS_RANDOM_DA_LEAF_SPLIT 1 #define XFS_RANDOM_ATTR_LEAF_TO_NODE 1 +#define XFS_RANDOM_WB_DELAY_MS 3000 #endif /* __XFS_ERRORTAG_H_ */ diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c index 5d1a995b15f8..95200aa77676 100644 --- a/fs/xfs/xfs_aops.c +++ b/fs/xfs/xfs_aops.c @@ -17,6 +17,8 @@ #include "xfs_bmap.h" #include "xfs_bmap_util.h" #include "xfs_reflink.h" +#include "xfs_errortag.h" +#include "xfs_error.h" struct xfs_writepage_ctx { struct iomap_writepage_ctx ctx; @@ -218,11 +220,15 @@ xfs_imap_valid( * checked (and found nothing at this offset) could have added * overlapping blocks. */ - if (XFS_WPC(wpc)->data_seq != READ_ONCE(ip->i_df.if_seq)) + if (XFS_WPC(wpc)->data_seq != READ_ONCE(ip->i_df.if_seq)) { + XFS_ERRORTAG_REPORT(ip->i_mount, XFS_ERRTAG_WB_DELAY_MS); return false; + } if (xfs_inode_has_cow_data(ip) && - XFS_WPC(wpc)->cow_seq != READ_ONCE(ip->i_cowfp->if_seq)) + XFS_WPC(wpc)->cow_seq != READ_ONCE(ip->i_cowfp->if_seq)) { + XFS_ERRORTAG_REPORT(ip->i_mount, XFS_ERRTAG_WB_DELAY_MS); return false; + } return true; } @@ -286,6 +292,8 @@ xfs_map_blocks( if (xfs_is_shutdown(mp)) return -EIO; + XFS_ERRORTAG_DELAY(mp, XFS_ERRTAG_WB_DELAY_MS); + /* * COW fork blocks can overlap data fork blocks even if the blocks * aren't shared. COW I/O always takes precedent, so we must always diff --git a/fs/xfs/xfs_error.c b/fs/xfs/xfs_error.c index dea3c0649d2f..b949cfe7dd18 100644 --- a/fs/xfs/xfs_error.c +++ b/fs/xfs/xfs_error.c @@ -60,6 +60,9 @@ static unsigned int xfs_errortag_random_default[] = { XFS_RANDOM_LARP, XFS_RANDOM_DA_LEAF_SPLIT, XFS_RANDOM_ATTR_LEAF_TO_NODE, + 0, /* 42 */ + 0, /* 43 */ + XFS_RANDOM_WB_DELAY_MS, }; struct xfs_errortag_attr { @@ -175,6 +178,7 @@ XFS_ERRORTAG_ATTR_RW(ag_resv_fail, XFS_ERRTAG_AG_RESV_FAIL); 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); static struct attribute *xfs_errortag_attrs[] = { XFS_ERRORTAG_ATTR_LIST(noerror), @@ -218,6 +222,7 @@ static struct attribute *xfs_errortag_attrs[] = { XFS_ERRORTAG_ATTR_LIST(larp), XFS_ERRORTAG_ATTR_LIST(da_leaf_split), XFS_ERRORTAG_ATTR_LIST(attr_leaf_to_node), + XFS_ERRORTAG_ATTR_LIST(wb_delay_ms), NULL, }; ATTRIBUTE_GROUPS(xfs_errortag); @@ -268,6 +273,14 @@ xfs_errortag_valid( } bool +xfs_errortag_enabled( + struct xfs_mount *mp, + unsigned int tag) +{ + return mp->m_errortag && mp->m_errortag[tag] != 0; +} + +bool xfs_errortag_test( struct xfs_mount *mp, const char *expression, diff --git a/fs/xfs/xfs_error.h b/fs/xfs/xfs_error.h index 5191e9145e55..15baa5428e1a 100644 --- a/fs/xfs/xfs_error.h +++ b/fs/xfs/xfs_error.h @@ -45,6 +45,26 @@ extern bool xfs_errortag_test(struct xfs_mount *mp, const char *expression, const char *file, int line, unsigned int error_tag); #define XFS_TEST_ERROR(expr, mp, tag) \ ((expr) || xfs_errortag_test((mp), #expr, __FILE__, __LINE__, (tag))) +bool xfs_errortag_enabled(struct xfs_mount *mp, unsigned int tag); +#define XFS_ERRORTAG_REPORT(mp, tag) \ + do { \ + if (!xfs_errortag_enabled((mp), (tag))) \ + break; \ + xfs_warn((mp), \ +"Injected errortag (%s) set to %u at file %s, line %d, on filesystem \"%s\"", \ + #tag, (mp)->m_errortag[(tag)], \ + __FILE__, __LINE__, (mp)->m_super->s_id); \ + } while (0) +#define XFS_ERRORTAG_DELAY(mp, tag) \ + do { \ + if (!xfs_errortag_enabled((mp), (tag))) \ + break; \ + xfs_warn_ratelimited((mp), \ +"Injecting %ums delay at file %s, line %d, on filesystem \"%s\"", \ + (mp)->m_errortag[(tag)], __FILE__, __LINE__, \ + (mp)->m_super->s_id); \ + mdelay((mp)->m_errortag[(tag)]); \ + } while (0) extern int xfs_errortag_get(struct xfs_mount *mp, unsigned int error_tag); extern int xfs_errortag_set(struct xfs_mount *mp, unsigned int error_tag, @@ -55,6 +75,8 @@ extern int xfs_errortag_clearall(struct xfs_mount *mp); #define xfs_errortag_init(mp) (0) #define xfs_errortag_del(mp) #define XFS_TEST_ERROR(expr, mp, tag) (expr) +#define XFS_ERRORTAG_REPORT(mp, tag) ((void)0) +#define XFS_ERRORTAG_DELAY(mp, tag) ((void)0) #define xfs_errortag_set(mp, tag, val) (ENOSYS) #define xfs_errortag_add(mp, tag) (ENOSYS) #define xfs_errortag_clearall(mp) (ENOSYS) |