#include "xfs_quota.h"
#include "xfs_dquot_item.h"
#include "xfs_dquot.h"
+#include "xfs_reflink.h"
#define XFS_WRITEIO_ALIGN(mp,off) (((off) >> mp->m_writeio_log) \
iomap->bdev = xfs_find_bdev_for_inode(VFS_I(ip));
}
-static xfs_extlen_t
+xfs_extlen_t
xfs_eof_alignment(
struct xfs_inode *ip,
xfs_extlen_t extsize)
}
retry:
- error = xfs_bmapi_reserve_delalloc(ip, offset_fsb,
+ error = xfs_bmapi_reserve_delalloc(ip, XFS_DATA_FORK, offset_fsb,
end_fsb - offset_fsb, &got,
&prev, &idx, eof);
switch (error) {
int
xfs_iomap_write_allocate(
xfs_inode_t *ip,
+ int whichfork,
xfs_off_t offset,
xfs_bmbt_irec_t *imap)
{
xfs_trans_t *tp;
int nimaps;
int error = 0;
+ int flags = 0;
int nres;
+ if (whichfork == XFS_COW_FORK)
+ flags |= XFS_BMAPI_COWFORK;
+
/*
* Make sure that the dquots are there.
*/
* pointer that the caller gave to us.
*/
error = xfs_bmapi_write(tp, ip, map_start_fsb,
- count_fsb, 0, &first_block,
+ count_fsb, flags, &first_block,
nres, imap, &nimaps,
&dfops);
if (error)
struct xfs_mount *mp = ip->i_mount;
struct xfs_bmbt_irec imap;
xfs_fileoff_t offset_fsb, end_fsb;
+ bool shared, trimmed;
int nimaps = 1, error = 0;
unsigned lockmode;
if (XFS_FORCED_SHUTDOWN(mp))
return -EIO;
- if ((flags & IOMAP_WRITE) &&
- !IS_DAX(inode) && !xfs_get_extsz_hint(ip)) {
+ if ((flags & (IOMAP_WRITE | IOMAP_ZERO)) && xfs_is_reflink_inode(ip)) {
+ error = xfs_reflink_reserve_cow_range(ip, offset, length);
+ if (error < 0)
+ return error;
+ }
+
+ if ((flags & IOMAP_WRITE) && !IS_DAX(inode) &&
+ !xfs_get_extsz_hint(ip)) {
+ /* Reserve delalloc blocks for regular writeback. */
return xfs_file_iomap_begin_delay(inode, offset, length, flags,
iomap);
}
end_fsb = XFS_B_TO_FSB(mp, offset + length);
error = xfs_bmapi_read(ip, offset_fsb, end_fsb - offset_fsb, &imap,
- &nimaps, XFS_BMAPI_ENTIRE);
+ &nimaps, 0);
+ if (error) {
+ xfs_iunlock(ip, lockmode);
+ return error;
+ }
+
+ /* Trim the mapping to the nearest shared extent boundary. */
+ error = xfs_reflink_trim_around_shared(ip, &imap, &shared, &trimmed);
if (error) {
xfs_iunlock(ip, lockmode);
return error;
}
xfs_bmbt_to_iomap(ip, iomap, &imap);
+ if (shared)
+ iomap->flags |= IOMAP_F_SHARED;
return 0;
}