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path: root/fs/xfs/libxfs/xfs_bmap.c
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Diffstat (limited to 'fs/xfs/libxfs/xfs_bmap.c')
-rw-r--r--fs/xfs/libxfs/xfs_bmap.c65
1 files changed, 49 insertions, 16 deletions
diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c
index 8e2010d53..119c2422a 100644
--- a/fs/xfs/libxfs/xfs_bmap.c
+++ b/fs/xfs/libxfs/xfs_bmap.c
@@ -948,14 +948,16 @@ xfs_bmap_local_to_extents(
bp = xfs_btree_get_bufl(args.mp, tp, args.fsbno, 0);
/*
- * Initialise the block and copy the data
+ * Initialize the block, copy the data and log the remote buffer.
*
- * Note: init_fn must set the buffer log item type correctly!
+ * The callout is responsible for logging because the remote format
+ * might differ from the local format and thus we don't know how much to
+ * log here. Note that init_fn must also set the buffer log item type
+ * correctly.
*/
init_fn(tp, bp, ip, ifp);
- /* account for the change in fork size and log everything */
- xfs_trans_log_buf(tp, bp, 0, ifp->if_bytes - 1);
+ /* account for the change in fork size */
xfs_idata_realloc(ip, -ifp->if_bytes, whichfork);
xfs_bmap_local_to_extents_empty(ip, whichfork);
flags |= XFS_ILOG_CORE;
@@ -1435,7 +1437,7 @@ xfs_bmap_search_extents(
xfs_ifork_t *ifp; /* inode fork pointer */
xfs_bmbt_rec_host_t *ep; /* extent record pointer */
- XFS_STATS_INC(xs_look_exlist);
+ XFS_STATS_INC(ip->i_mount, xs_look_exlist);
ifp = XFS_IFORK_PTR(ip, fork);
ep = xfs_bmap_search_multi_extents(ifp, bno, eofp, lastxp, gotp, prevp);
@@ -1732,7 +1734,7 @@ xfs_bmap_add_extent_delay_real(
ASSERT(!bma->cur ||
(bma->cur->bc_private.b.flags & XFS_BTCUR_BPRV_WASDEL));
- XFS_STATS_INC(xs_add_exlist);
+ XFS_STATS_INC(mp, xs_add_exlist);
#define LEFT r[0]
#define RIGHT r[1]
@@ -2286,7 +2288,7 @@ xfs_bmap_add_extent_unwritten_real(
ASSERT(*idx <= ifp->if_bytes / sizeof(struct xfs_bmbt_rec));
ASSERT(!isnullstartblock(new->br_startblock));
- XFS_STATS_INC(xs_add_exlist);
+ XFS_STATS_INC(mp, xs_add_exlist);
#define LEFT r[0]
#define RIGHT r[1]
@@ -2946,7 +2948,7 @@ xfs_bmap_add_extent_hole_real(
ASSERT(!bma->cur ||
!(bma->cur->bc_private.b.flags & XFS_BTCUR_BPRV_WASDEL));
- XFS_STATS_INC(xs_add_exlist);
+ XFS_STATS_INC(mp, xs_add_exlist);
state = 0;
if (whichfork == XFS_ATTR_FORK)
@@ -3800,8 +3802,13 @@ xfs_bmap_btalloc(
args.wasdel = ap->wasdel;
args.isfl = 0;
args.userdata = ap->userdata;
- if ((error = xfs_alloc_vextent(&args)))
+ if (ap->userdata & XFS_ALLOC_USERDATA_ZERO)
+ args.ip = ap->ip;
+
+ error = xfs_alloc_vextent(&args);
+ if (error)
return error;
+
if (tryagain && args.fsbno == NULLFSBLOCK) {
/*
* Exact allocation failed. Now try with alignment
@@ -4036,7 +4043,7 @@ xfs_bmapi_read(
if (XFS_FORCED_SHUTDOWN(mp))
return -EIO;
- XFS_STATS_INC(xs_blk_mapr);
+ XFS_STATS_INC(mp, xs_blk_mapr);
ifp = XFS_IFORK_PTR(ip, whichfork);
@@ -4221,7 +4228,7 @@ xfs_bmapi_delay(
if (XFS_FORCED_SHUTDOWN(mp))
return -EIO;
- XFS_STATS_INC(xs_blk_mapw);
+ XFS_STATS_INC(mp, xs_blk_mapw);
if (!(ifp->if_flags & XFS_IFEXTENTS)) {
error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK);
@@ -4300,11 +4307,14 @@ xfs_bmapi_allocate(
/*
* Indicate if this is the first user data in the file, or just any
- * user data.
+ * user data. And if it is userdata, indicate whether it needs to
+ * be initialised to zero during allocation.
*/
if (!(bma->flags & XFS_BMAPI_METADATA)) {
bma->userdata = (bma->offset == 0) ?
XFS_ALLOC_INITIAL_USER_DATA : XFS_ALLOC_USERDATA;
+ if (bma->flags & XFS_BMAPI_ZERO)
+ bma->userdata |= XFS_ALLOC_USERDATA_ZERO;
}
bma->minlen = (bma->flags & XFS_BMAPI_CONTIG) ? bma->length : 1;
@@ -4419,6 +4429,17 @@ xfs_bmapi_convert_unwritten(
mval->br_state = (mval->br_state == XFS_EXT_UNWRITTEN)
? XFS_EXT_NORM : XFS_EXT_UNWRITTEN;
+ /*
+ * Before insertion into the bmbt, zero the range being converted
+ * if required.
+ */
+ if (flags & XFS_BMAPI_ZERO) {
+ error = xfs_zero_extent(bma->ip, mval->br_startblock,
+ mval->br_blockcount);
+ if (error)
+ return error;
+ }
+
error = xfs_bmap_add_extent_unwritten_real(bma->tp, bma->ip, &bma->idx,
&bma->cur, mval, bma->firstblock, bma->flist,
&tmp_logflags);
@@ -4512,6 +4533,18 @@ xfs_bmapi_write(
ASSERT(XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_LOCAL);
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
+ /* zeroing is for currently only for data extents, not metadata */
+ ASSERT((flags & (XFS_BMAPI_METADATA | XFS_BMAPI_ZERO)) !=
+ (XFS_BMAPI_METADATA | XFS_BMAPI_ZERO));
+ /*
+ * we can allocate unwritten extents or pre-zero allocated blocks,
+ * but it makes no sense to do both at once. This would result in
+ * zeroing the unwritten extent twice, but it still being an
+ * unwritten extent....
+ */
+ ASSERT((flags & (XFS_BMAPI_PREALLOC | XFS_BMAPI_ZERO)) !=
+ (XFS_BMAPI_PREALLOC | XFS_BMAPI_ZERO));
+
if (unlikely(XFS_TEST_ERROR(
(XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS &&
XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE),
@@ -4525,7 +4558,7 @@ xfs_bmapi_write(
ifp = XFS_IFORK_PTR(ip, whichfork);
- XFS_STATS_INC(xs_blk_mapw);
+ XFS_STATS_INC(mp, xs_blk_mapw);
if (*firstblock == NULLFSBLOCK) {
if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE)
@@ -4718,12 +4751,12 @@ xfs_bmap_del_extent(
xfs_filblks_t temp2; /* for indirect length calculations */
int state = 0;
- XFS_STATS_INC(xs_del_exlist);
+ mp = ip->i_mount;
+ XFS_STATS_INC(mp, xs_del_exlist);
if (whichfork == XFS_ATTR_FORK)
state |= BMAP_ATTRFORK;
- mp = ip->i_mount;
ifp = XFS_IFORK_PTR(ip, whichfork);
ASSERT((*idx >= 0) && (*idx < ifp->if_bytes /
(uint)sizeof(xfs_bmbt_rec_t)));
@@ -5070,7 +5103,7 @@ xfs_bunmapi(
*done = 1;
return 0;
}
- XFS_STATS_INC(xs_blk_unmap);
+ XFS_STATS_INC(mp, xs_blk_unmap);
isrt = (whichfork == XFS_DATA_FORK) && XFS_IS_REALTIME_INODE(ip);
start = bno;
bno = start + len - 1;
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-16 10:27:14 +0000