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path: root/fs/xfs/xfs_iomap.c
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Diffstat (limited to 'fs/xfs/xfs_iomap.c')
-rw-r--r--fs/xfs/xfs_iomap.c76
1 files changed, 36 insertions, 40 deletions
diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c
index ef14943829da..20576146369f 100644
--- a/fs/xfs/xfs_iomap.c
+++ b/fs/xfs/xfs_iomap.c
@@ -23,19 +23,14 @@
#include "xfs_trans.h"
#include "xfs_sb.h"
#include "xfs_ag.h"
-#include "xfs_dir2.h"
#include "xfs_alloc.h"
-#include "xfs_dmapi.h"
#include "xfs_quota.h"
#include "xfs_mount.h"
#include "xfs_bmap_btree.h"
#include "xfs_alloc_btree.h"
#include "xfs_ialloc_btree.h"
-#include "xfs_dir2_sf.h"
-#include "xfs_attr_sf.h"
#include "xfs_dinode.h"
#include "xfs_inode.h"
-#include "xfs_ialloc.h"
#include "xfs_btree.h"
#include "xfs_bmap.h"
#include "xfs_rtalloc.h"
@@ -123,7 +118,7 @@ xfs_iomap(
error = xfs_bmapi(NULL, ip, offset_fsb,
(xfs_filblks_t)(end_fsb - offset_fsb),
bmapi_flags, NULL, 0, imap,
- nimaps, NULL, NULL);
+ nimaps, NULL);
if (error)
goto out;
@@ -138,7 +133,7 @@ xfs_iomap(
break;
}
- if (flags & (BMAPI_DIRECT|BMAPI_MMAP)) {
+ if (flags & BMAPI_DIRECT) {
error = xfs_iomap_write_direct(ip, offset, count, flags,
imap, nimaps);
} else {
@@ -247,7 +242,7 @@ xfs_iomap_write_direct(
xfs_off_t offset,
size_t count,
int flags,
- xfs_bmbt_irec_t *ret_imap,
+ xfs_bmbt_irec_t *imap,
int *nmaps)
{
xfs_mount_t *mp = ip->i_mount;
@@ -261,7 +256,6 @@ xfs_iomap_write_direct(
int quota_flag;
int rt;
xfs_trans_t *tp;
- xfs_bmbt_irec_t imap;
xfs_bmap_free_t free_list;
uint qblocks, resblks, resrtextents;
int committed;
@@ -285,10 +279,10 @@ xfs_iomap_write_direct(
if (error)
goto error_out;
} else {
- if (*nmaps && (ret_imap->br_startblock == HOLESTARTBLOCK))
+ if (*nmaps && (imap->br_startblock == HOLESTARTBLOCK))
last_fsb = MIN(last_fsb, (xfs_fileoff_t)
- ret_imap->br_blockcount +
- ret_imap->br_startoff);
+ imap->br_blockcount +
+ imap->br_startoff);
}
count_fsb = last_fsb - offset_fsb;
ASSERT(count_fsb > 0);
@@ -334,20 +328,22 @@ xfs_iomap_write_direct(
if (error)
goto error1;
- xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
- xfs_trans_ihold(tp, ip);
+ xfs_trans_ijoin(tp, ip);
bmapi_flag = XFS_BMAPI_WRITE;
if ((flags & BMAPI_DIRECT) && (offset < ip->i_size || extsz))
bmapi_flag |= XFS_BMAPI_PREALLOC;
/*
- * Issue the xfs_bmapi() call to allocate the blocks
+ * Issue the xfs_bmapi() call to allocate the blocks.
+ *
+ * From this point onwards we overwrite the imap pointer that the
+ * caller gave to us.
*/
xfs_bmap_init(&free_list, &firstfsb);
nimaps = 1;
error = xfs_bmapi(tp, ip, offset_fsb, count_fsb, bmapi_flag,
- &firstfsb, 0, &imap, &nimaps, &free_list, NULL);
+ &firstfsb, 0, imap, &nimaps, &free_list);
if (error)
goto error0;
@@ -369,12 +365,11 @@ xfs_iomap_write_direct(
goto error_out;
}
- if (!(imap.br_startblock || XFS_IS_REALTIME_INODE(ip))) {
- error = xfs_cmn_err_fsblock_zero(ip, &imap);
+ if (!(imap->br_startblock || XFS_IS_REALTIME_INODE(ip))) {
+ error = xfs_cmn_err_fsblock_zero(ip, imap);
goto error_out;
}
- *ret_imap = imap;
*nmaps = 1;
return 0;
@@ -425,7 +420,7 @@ xfs_iomap_eof_want_preallocate(
imaps = nimaps;
firstblock = NULLFSBLOCK;
error = xfs_bmapi(NULL, ip, start_fsb, count_fsb, 0,
- &firstblock, 0, imap, &imaps, NULL, NULL);
+ &firstblock, 0, imap, &imaps, NULL);
if (error)
return error;
for (n = 0; n < imaps; n++) {
@@ -500,7 +495,7 @@ retry:
(xfs_filblks_t)(last_fsb - offset_fsb),
XFS_BMAPI_DELAY | XFS_BMAPI_WRITE |
XFS_BMAPI_ENTIRE, &firstblock, 1, imap,
- &nimaps, NULL, NULL);
+ &nimaps, NULL);
if (error && (error != ENOSPC))
return XFS_ERROR(error);
@@ -548,7 +543,7 @@ xfs_iomap_write_allocate(
xfs_inode_t *ip,
xfs_off_t offset,
size_t count,
- xfs_bmbt_irec_t *map,
+ xfs_bmbt_irec_t *imap,
int *retmap)
{
xfs_mount_t *mp = ip->i_mount;
@@ -557,7 +552,6 @@ xfs_iomap_write_allocate(
xfs_fsblock_t first_block;
xfs_bmap_free_t free_list;
xfs_filblks_t count_fsb;
- xfs_bmbt_irec_t imap;
xfs_trans_t *tp;
int nimaps, committed;
int error = 0;
@@ -573,8 +567,8 @@ xfs_iomap_write_allocate(
return XFS_ERROR(error);
offset_fsb = XFS_B_TO_FSBT(mp, offset);
- count_fsb = map->br_blockcount;
- map_start_fsb = map->br_startoff;
+ count_fsb = imap->br_blockcount;
+ map_start_fsb = imap->br_startoff;
XFS_STATS_ADD(xs_xstrat_bytes, XFS_FSB_TO_B(mp, count_fsb));
@@ -602,8 +596,7 @@ xfs_iomap_write_allocate(
return XFS_ERROR(error);
}
xfs_ilock(ip, XFS_ILOCK_EXCL);
- xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
- xfs_trans_ihold(tp, ip);
+ xfs_trans_ijoin(tp, ip);
xfs_bmap_init(&free_list, &first_block);
@@ -654,10 +647,15 @@ xfs_iomap_write_allocate(
}
}
- /* Go get the actual blocks */
+ /*
+ * Go get the actual blocks.
+ *
+ * From this point onwards we overwrite the imap
+ * pointer that the caller gave to us.
+ */
error = xfs_bmapi(tp, ip, map_start_fsb, count_fsb,
XFS_BMAPI_WRITE, &first_block, 1,
- &imap, &nimaps, &free_list, NULL);
+ imap, &nimaps, &free_list);
if (error)
goto trans_cancel;
@@ -676,13 +674,12 @@ xfs_iomap_write_allocate(
* See if we were able to allocate an extent that
* covers at least part of the callers request
*/
- if (!(imap.br_startblock || XFS_IS_REALTIME_INODE(ip)))
- return xfs_cmn_err_fsblock_zero(ip, &imap);
+ if (!(imap->br_startblock || XFS_IS_REALTIME_INODE(ip)))
+ return xfs_cmn_err_fsblock_zero(ip, imap);
- if ((offset_fsb >= imap.br_startoff) &&
- (offset_fsb < (imap.br_startoff +
- imap.br_blockcount))) {
- *map = imap;
+ if ((offset_fsb >= imap->br_startoff) &&
+ (offset_fsb < (imap->br_startoff +
+ imap->br_blockcount))) {
*retmap = 1;
XFS_STATS_INC(xs_xstrat_quick);
return 0;
@@ -692,8 +689,8 @@ xfs_iomap_write_allocate(
* So far we have not mapped the requested part of the
* file, just surrounding data, try again.
*/
- count_fsb -= imap.br_blockcount;
- map_start_fsb = imap.br_startoff + imap.br_blockcount;
+ count_fsb -= imap->br_blockcount;
+ map_start_fsb = imap->br_startoff + imap->br_blockcount;
}
trans_cancel:
@@ -766,8 +763,7 @@ xfs_iomap_write_unwritten(
}
xfs_ilock(ip, XFS_ILOCK_EXCL);
- xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
- xfs_trans_ihold(tp, ip);
+ xfs_trans_ijoin(tp, ip);
/*
* Modify the unwritten extent state of the buffer.
@@ -776,7 +772,7 @@ xfs_iomap_write_unwritten(
nimaps = 1;
error = xfs_bmapi(tp, ip, offset_fsb, count_fsb,
XFS_BMAPI_WRITE|XFS_BMAPI_CONVERT, &firstfsb,
- 1, &imap, &nimaps, &free_list, NULL);
+ 1, &imap, &nimaps, &free_list);
if (error)
goto error_on_bmapi_transaction;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.