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Diffstat (limited to 'fs/xfs/xfs_iomap.c')
-rw-r--r--fs/xfs/xfs_iomap.c122
1 files changed, 3 insertions, 119 deletions
diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c
index 991291068378..22b62a179e89 100644
--- a/fs/xfs/xfs_iomap.c
+++ b/fs/xfs/xfs_iomap.c
@@ -47,124 +47,8 @@
#define XFS_WRITEIO_ALIGN(mp,off) (((off) >> mp->m_writeio_log) \
<< mp->m_writeio_log)
-#define XFS_STRAT_WRITE_IMAPS 2
#define XFS_WRITE_IMAPS XFS_BMAP_MAX_NMAP
-STATIC int xfs_iomap_write_direct(struct xfs_inode *, xfs_off_t, size_t,
- struct xfs_bmbt_irec *, int);
-STATIC int xfs_iomap_write_delay(struct xfs_inode *, xfs_off_t, size_t,
- struct xfs_bmbt_irec *);
-STATIC int xfs_iomap_write_allocate(struct xfs_inode *, xfs_off_t, size_t,
- struct xfs_bmbt_irec *);
-
-int
-xfs_iomap(
- struct xfs_inode *ip,
- xfs_off_t offset,
- ssize_t count,
- int flags,
- struct xfs_bmbt_irec *imap,
- int *nimaps,
- int *new)
-{
- 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);
-
- *new = 0;
-
- if (XFS_FORCED_SHUTDOWN(mp))
- return XFS_ERROR(EIO);
-
- trace_xfs_iomap_enter(ip, offset, count, flags, NULL);
-
- switch (flags & (BMAPI_READ | BMAPI_WRITE | BMAPI_ALLOCATE)) {
- case BMAPI_READ:
- lockmode = xfs_ilock_map_shared(ip);
- bmapi_flags = XFS_BMAPI_ENTIRE;
- break;
- case BMAPI_WRITE:
- lockmode = XFS_ILOCK_EXCL;
- if (flags & BMAPI_IGNSTATE)
- bmapi_flags |= XFS_BMAPI_IGSTATE|XFS_BMAPI_ENTIRE;
- xfs_ilock(ip, lockmode);
- break;
- case BMAPI_ALLOCATE:
- lockmode = XFS_ILOCK_SHARED;
- bmapi_flags = XFS_BMAPI_ENTIRE;
-
- /* Attempt non-blocking lock */
- if (flags & BMAPI_TRYLOCK) {
- if (!xfs_ilock_nowait(ip, lockmode))
- return XFS_ERROR(EAGAIN);
- } else {
- xfs_ilock(ip, lockmode);
- }
- break;
- default:
- BUG();
- }
-
- ASSERT(offset <= mp->m_maxioffset);
- if ((xfs_fsize_t)offset + count > mp->m_maxioffset)
- count = mp->m_maxioffset - offset;
- end_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)offset + count);
- offset_fsb = XFS_B_TO_FSBT(mp, offset);
-
- error = xfs_bmapi(NULL, ip, offset_fsb,
- (xfs_filblks_t)(end_fsb - offset_fsb),
- bmapi_flags, NULL, 0, imap,
- nimaps, NULL);
-
- if (error)
- goto out;
-
- 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);
- break;
- }
-
- if (flags & BMAPI_DIRECT) {
- error = xfs_iomap_write_direct(ip, offset, count, imap,
- *nimaps);
- } else {
- error = xfs_iomap_write_delay(ip, offset, count, imap);
- }
-
- if (!error) {
- trace_xfs_iomap_alloc(ip, offset, count, flags, imap);
- }
- *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);
- break;
- }
-
- error = xfs_iomap_write_allocate(ip, offset, count, imap);
- break;
- }
-
-out:
- if (lockmode)
- xfs_iunlock(ip, lockmode);
- return XFS_ERROR(error);
-}
-
STATIC int
xfs_iomap_eof_align_last_fsb(
xfs_mount_t *mp,
@@ -233,7 +117,7 @@ xfs_cmn_err_fsblock_zero(
return EFSCORRUPTED;
}
-STATIC int
+int
xfs_iomap_write_direct(
xfs_inode_t *ip,
xfs_off_t offset,
@@ -428,7 +312,7 @@ xfs_iomap_eof_want_preallocate(
return 0;
}
-STATIC int
+int
xfs_iomap_write_delay(
xfs_inode_t *ip,
xfs_off_t offset,
@@ -527,7 +411,7 @@ retry:
* We no longer bother to look at the incoming map - all we have to
* guarantee is that whatever we allocate fills the required range.
*/
-STATIC int
+int
xfs_iomap_write_allocate(
xfs_inode_t *ip,
xfs_off_t offset,