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xfs: kill struct xfs_iomap

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Now that struct xfs_iomap contains exactly the same units as struct
xfs_bmbt_irec we can just use the latter directly in the aops code.
Replace the missing IOMAP_NEW flag with a new boolean output
parameter to xfs_iomap.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>
This commit is contained in:
Christoph Hellwig
2010-04-28 12:28:56 +00:00
committed by Alex Elder
parent e513182d4d
commit 207d041602
3 changed files with 75 additions and 123 deletions
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82
fs/xfs/xfs_iomap.c
View File

@@ -55,46 +55,25 @@
#define XFS_STRAT_WRITE_IMAPS 2
#define XFS_WRITE_IMAPS XFS_BMAP_MAX_NMAP
STATIC void
xfs_imap_to_bmap(
xfs_inode_t *ip,
xfs_off_t offset,
xfs_bmbt_irec_t *imap,
xfs_iomap_t *iomapp,
int imaps, /* Number of imap entries */
int flags)
{
iomapp->iomap_offset = imap->br_startoff;
iomapp->iomap_bsize = imap->br_blockcount;
iomapp->iomap_flags = flags;
iomapp->iomap_bn = imap->br_startblock;
if (imap->br_startblock != HOLESTARTBLOCK &&
imap->br_startblock != DELAYSTARTBLOCK &&
ISUNWRITTEN(imap))
iomapp->iomap_flags |= IOMAP_UNWRITTEN;
}
int
xfs_iomap(
xfs_inode_t *ip,
xfs_off_t offset,
ssize_t count,
int flags,
xfs_iomap_t *iomapp,
int *niomaps)
struct xfs_inode *ip,
xfs_off_t offset,
ssize_t count,
int flags,
struct xfs_bmbt_irec *imap,
int *nimaps,
int *new)
{
xfs_mount_t *mp = ip->i_mount;
xfs_fileoff_t offset_fsb, end_fsb;
int error = 0;
int lockmode = 0;
xfs_bmbt_irec_t imap;
int nimaps = 1;
int bmapi_flags = 0;
int iomap_flags = 0;
struct xfs_mount *mp = ip->i_mount;
xfs_fileoff_t offset_fsb, end_fsb;
int error = 0;
int lockmode = 0;
int bmapi_flags = 0;
ASSERT((ip->i_d.di_mode & S_IFMT) == S_IFREG);
ASSERT(niomaps && *niomaps == 1);
*new = 0;
if (XFS_FORCED_SHUTDOWN(mp))
return XFS_ERROR(EIO);
@@ -136,8 +115,8 @@ xfs_iomap(
error = xfs_bmapi(NULL, ip, offset_fsb,
(xfs_filblks_t)(end_fsb - offset_fsb),
bmapi_flags, NULL, 0, &imap,
&nimaps, NULL, NULL);
bmapi_flags, NULL, 0, imap,
nimaps, NULL, NULL);
if (error)
goto out;
@@ -145,45 +124,41 @@ xfs_iomap(
switch (flags & (BMAPI_WRITE|BMAPI_ALLOCATE)) {
case BMAPI_WRITE:
/* If we found an extent, return it */
if (nimaps &&
(imap.br_startblock != HOLESTARTBLOCK) &&
(imap.br_startblock != DELAYSTARTBLOCK)) {
trace_xfs_iomap_found(ip, offset, count, flags, &imap);
if (*nimaps &&
(imap->br_startblock != HOLESTARTBLOCK) &&
(imap->br_startblock != DELAYSTARTBLOCK)) {
trace_xfs_iomap_found(ip, offset, count, flags, imap);
break;
}
if (flags & (BMAPI_DIRECT|BMAPI_MMAP)) {
error = xfs_iomap_write_direct(ip, offset, count, flags,
&imap, &nimaps, nimaps);
imap, nimaps, *nimaps);
} else {
error = xfs_iomap_write_delay(ip, offset, count, flags,
&imap, &nimaps);
imap, nimaps);
}
if (!error) {
trace_xfs_iomap_alloc(ip, offset, count, flags, &imap);
trace_xfs_iomap_alloc(ip, offset, count, flags, imap);
}
iomap_flags = IOMAP_NEW;
*new = 1;
break;
case BMAPI_ALLOCATE:
/* If we found an extent, return it */
xfs_iunlock(ip, lockmode);
lockmode = 0;
if (nimaps && !isnullstartblock(imap.br_startblock)) {
trace_xfs_iomap_found(ip, offset, count, flags, &imap);
if (*nimaps && !isnullstartblock(imap->br_startblock)) {
trace_xfs_iomap_found(ip, offset, count, flags, imap);
break;
}
error = xfs_iomap_write_allocate(ip, offset, count,
&imap, &nimaps);
imap, nimaps);
break;
}
ASSERT(nimaps <= 1);
if (nimaps)
xfs_imap_to_bmap(ip, offset, &imap, iomapp, nimaps, iomap_flags);
*niomaps = nimaps;
ASSERT(*nimaps <= 1);
out:
if (lockmode)
@@ -191,7 +166,6 @@ out:
return XFS_ERROR(error);
}
STATIC int
xfs_iomap_eof_align_last_fsb(
xfs_mount_t *mp,