#include "xfs_log_format.h"
#include "xfs_trans_resv.h"
#include "xfs_mount.h"
+#include "xfs_defer.h"
#include "xfs_inode.h"
#include "xfs_btree.h"
#include "xfs_bmap_btree.h"
int quota_flag;
int rt;
xfs_trans_t *tp;
- xfs_bmap_free_t free_list;
+ struct xfs_defer_ops dfops;
uint qblocks, resblks, resrtextents;
int error;
int lockmode;
* From this point onwards we overwrite the imap pointer that the
* caller gave to us.
*/
- xfs_bmap_init(&free_list, &firstfsb);
+ xfs_defer_init(&dfops, &firstfsb);
nimaps = 1;
error = xfs_bmapi_write(tp, ip, offset_fsb, count_fsb,
bmapi_flags, &firstfsb, resblks, imap,
- &nimaps, &free_list);
+ &nimaps, &dfops);
if (error)
goto out_bmap_cancel;
/*
* Complete the transaction
*/
- error = xfs_bmap_finish(&tp, &free_list, NULL);
+ error = xfs_defer_finish(&tp, &dfops, NULL);
if (error)
goto out_bmap_cancel;
return error;
out_bmap_cancel:
- xfs_bmap_cancel(&free_list);
+ xfs_defer_cancel(&dfops);
xfs_trans_unreserve_quota_nblks(tp, ip, (long)qblocks, 0, quota_flag);
out_trans_cancel:
xfs_trans_cancel(tp);
xfs_fileoff_t offset_fsb, last_block;
xfs_fileoff_t end_fsb, map_start_fsb;
xfs_fsblock_t first_block;
- xfs_bmap_free_t free_list;
+ struct xfs_defer_ops dfops;
xfs_filblks_t count_fsb;
xfs_trans_t *tp;
int nimaps;
* is in the delayed allocation extent on which we sit
* but before our buffer starts.
*/
-
nimaps = 0;
while (nimaps == 0) {
nres = XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK);
-
- error = xfs_trans_alloc(mp, &M_RES(mp)->tr_write, nres,
+ /*
+ * We have already reserved space for the extent and any
+ * indirect blocks when creating the delalloc extent,
+ * there is no need to reserve space in this transaction
+ * again.
+ */
+ error = xfs_trans_alloc(mp, &M_RES(mp)->tr_write, 0,
0, XFS_TRANS_RESERVE, &tp);
if (error)
return error;
xfs_ilock(ip, XFS_ILOCK_EXCL);
xfs_trans_ijoin(tp, ip, 0);
- xfs_bmap_init(&free_list, &first_block);
+ xfs_defer_init(&dfops, &first_block);
/*
* it is possible that the extents have changed since
error = xfs_bmapi_write(tp, ip, map_start_fsb,
count_fsb, 0, &first_block,
nres, imap, &nimaps,
- &free_list);
+ &dfops);
if (error)
goto trans_cancel;
- error = xfs_bmap_finish(&tp, &free_list, NULL);
+ error = xfs_defer_finish(&tp, &dfops, NULL);
if (error)
goto trans_cancel;
}
trans_cancel:
- xfs_bmap_cancel(&free_list);
+ xfs_defer_cancel(&dfops);
xfs_trans_cancel(tp);
error0:
xfs_iunlock(ip, XFS_ILOCK_EXCL);
int nimaps;
xfs_trans_t *tp;
xfs_bmbt_irec_t imap;
- xfs_bmap_free_t free_list;
+ struct xfs_defer_ops dfops;
xfs_fsize_t i_size;
uint resblks;
int error;
/*
* Modify the unwritten extent state of the buffer.
*/
- xfs_bmap_init(&free_list, &firstfsb);
+ xfs_defer_init(&dfops, &firstfsb);
nimaps = 1;
error = xfs_bmapi_write(tp, ip, offset_fsb, count_fsb,
XFS_BMAPI_CONVERT, &firstfsb, resblks,
- &imap, &nimaps, &free_list);
+ &imap, &nimaps, &dfops);
if (error)
goto error_on_bmapi_transaction;
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
}
- error = xfs_bmap_finish(&tp, &free_list, NULL);
+ error = xfs_defer_finish(&tp, &dfops, NULL);
if (error)
goto error_on_bmapi_transaction;
return 0;
error_on_bmapi_transaction:
- xfs_bmap_cancel(&free_list);
+ xfs_defer_cancel(&dfops);
xfs_trans_cancel(tp);
xfs_iunlock(ip, XFS_ILOCK_EXCL);
return error;
return error;
trace_xfs_iomap_alloc(ip, offset, length, 0, &imap);
- xfs_bmbt_to_iomap(ip, iomap, &imap);
- } else if (nimaps) {
- xfs_iunlock(ip, XFS_ILOCK_EXCL);
- trace_xfs_iomap_found(ip, offset, length, 0, &imap);
- xfs_bmbt_to_iomap(ip, iomap, &imap);
} else {
+ ASSERT(nimaps);
+
xfs_iunlock(ip, XFS_ILOCK_EXCL);
- trace_xfs_iomap_not_found(ip, offset, length, 0, &imap);
- iomap->blkno = IOMAP_NULL_BLOCK;
- iomap->type = IOMAP_HOLE;
- iomap->offset = offset;
- iomap->length = length;
+ trace_xfs_iomap_found(ip, offset, length, 0, &imap);
}
+ xfs_bmbt_to_iomap(ip, iomap, &imap);
return 0;
}
.iomap_begin = xfs_file_iomap_begin,
.iomap_end = xfs_file_iomap_end,
};
+
+static int
+xfs_xattr_iomap_begin(
+ struct inode *inode,
+ loff_t offset,
+ loff_t length,
+ unsigned flags,
+ struct iomap *iomap)
+{
+ struct xfs_inode *ip = XFS_I(inode);
+ struct xfs_mount *mp = ip->i_mount;
+ xfs_fileoff_t offset_fsb = XFS_B_TO_FSBT(mp, offset);
+ xfs_fileoff_t end_fsb = XFS_B_TO_FSB(mp, offset + length);
+ struct xfs_bmbt_irec imap;
+ int nimaps = 1, error = 0;
+ unsigned lockmode;
+
+ if (XFS_FORCED_SHUTDOWN(mp))
+ return -EIO;
+
+ lockmode = xfs_ilock_data_map_shared(ip);
+
+ /* if there are no attribute fork or extents, return ENOENT */
+ if (XFS_IFORK_Q(ip) || !ip->i_d.di_anextents) {
+ error = -ENOENT;
+ goto out_unlock;
+ }
+
+ ASSERT(ip->i_d.di_aformat != XFS_DINODE_FMT_LOCAL);
+ error = xfs_bmapi_read(ip, offset_fsb, end_fsb - offset_fsb, &imap,
+ &nimaps, XFS_BMAPI_ENTIRE | XFS_BMAPI_ATTRFORK);
+out_unlock:
+ xfs_iunlock(ip, lockmode);
+
+ if (!error) {
+ ASSERT(nimaps);
+ xfs_bmbt_to_iomap(ip, iomap, &imap);
+ }
+
+ return error;
+}
+
+struct iomap_ops xfs_xattr_iomap_ops = {
+ .iomap_begin = xfs_xattr_iomap_begin,
+};
projects / cascardo / linux.git / blobdiff