* since the file data needs to get logged so things will stay consistent.
* (The bmap-level manipulations are ok, though).
*/
+void
+xfs_bmap_local_to_extents_empty(
+ struct xfs_inode *ip,
+ int whichfork)
+{
+ struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork);
+
+ ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL);
+ ASSERT(ifp->if_bytes == 0);
+ ASSERT(XFS_IFORK_NEXTENTS(ip, whichfork) == 0);
+
+ xfs_bmap_forkoff_reset(ip->i_mount, ip, whichfork);
+ ifp->if_flags &= ~XFS_IFINLINE;
+ ifp->if_flags |= XFS_IFEXTENTS;
+ XFS_IFORK_FMT_SET(ip, whichfork, XFS_DINODE_FMT_EXTENTS);
+}
+
+
STATIC int /* error */
xfs_bmap_local_to_extents(
xfs_trans_t *tp, /* transaction pointer */
struct xfs_inode *ip,
struct xfs_ifork *ifp))
{
- int error; /* error return value */
+ int error = 0;
int flags; /* logging flags returned */
xfs_ifork_t *ifp; /* inode fork pointer */
+ xfs_alloc_arg_t args; /* allocation arguments */
+ xfs_buf_t *bp; /* buffer for extent block */
+ xfs_bmbt_rec_host_t *ep; /* extent record pointer */
/*
* We don't want to deal with the case of keeping inode data inline yet.
ASSERT(!(S_ISREG(ip->i_d.di_mode) && whichfork == XFS_DATA_FORK));
ifp = XFS_IFORK_PTR(ip, whichfork);
ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL);
+
+ if (!ifp->if_bytes) {
+ xfs_bmap_local_to_extents_empty(ip, whichfork);
+ flags = XFS_ILOG_CORE;
+ goto done;
+ }
+
flags = 0;
error = 0;
- if (ifp->if_bytes) {
- xfs_alloc_arg_t args; /* allocation arguments */
- xfs_buf_t *bp; /* buffer for extent block */
- xfs_bmbt_rec_host_t *ep;/* extent record pointer */
-
- ASSERT((ifp->if_flags &
- (XFS_IFINLINE|XFS_IFEXTENTS|XFS_IFEXTIREC)) == XFS_IFINLINE);
- memset(&args, 0, sizeof(args));
- args.tp = tp;
- args.mp = ip->i_mount;
- args.firstblock = *firstblock;
- /*
- * Allocate a block. We know we need only one, since the
- * file currently fits in an inode.
- */
- if (*firstblock == NULLFSBLOCK) {
- args.fsbno = XFS_INO_TO_FSB(args.mp, ip->i_ino);
- args.type = XFS_ALLOCTYPE_START_BNO;
- } else {
- args.fsbno = *firstblock;
- args.type = XFS_ALLOCTYPE_NEAR_BNO;
- }
- args.total = total;
- args.minlen = args.maxlen = args.prod = 1;
- error = xfs_alloc_vextent(&args);
- if (error)
- goto done;
-
- /* Can't fail, the space was reserved. */
- ASSERT(args.fsbno != NULLFSBLOCK);
- ASSERT(args.len == 1);
- *firstblock = args.fsbno;
- bp = xfs_btree_get_bufl(args.mp, tp, args.fsbno, 0);
-
- /* initialise the block and copy the data */
- init_fn(tp, bp, ip, ifp);
-
- /* account for the change in fork size and log everything */
- xfs_trans_log_buf(tp, bp, 0, ifp->if_bytes - 1);
- xfs_bmap_forkoff_reset(args.mp, ip, whichfork);
- xfs_idata_realloc(ip, -ifp->if_bytes, whichfork);
- xfs_iext_add(ifp, 0, 1);
- ep = xfs_iext_get_ext(ifp, 0);
- xfs_bmbt_set_allf(ep, 0, args.fsbno, 1, XFS_EXT_NORM);
- trace_xfs_bmap_post_update(ip, 0,
- whichfork == XFS_ATTR_FORK ? BMAP_ATTRFORK : 0,
- _THIS_IP_);
- XFS_IFORK_NEXT_SET(ip, whichfork, 1);
- ip->i_d.di_nblocks = 1;
- xfs_trans_mod_dquot_byino(tp, ip,
- XFS_TRANS_DQ_BCOUNT, 1L);
- flags |= xfs_ilog_fext(whichfork);
+ ASSERT((ifp->if_flags & (XFS_IFINLINE|XFS_IFEXTENTS|XFS_IFEXTIREC)) ==
+ XFS_IFINLINE);
+ memset(&args, 0, sizeof(args));
+ args.tp = tp;
+ args.mp = ip->i_mount;
+ args.firstblock = *firstblock;
+ /*
+ * Allocate a block. We know we need only one, since the
+ * file currently fits in an inode.
+ */
+ if (*firstblock == NULLFSBLOCK) {
+ args.fsbno = XFS_INO_TO_FSB(args.mp, ip->i_ino);
+ args.type = XFS_ALLOCTYPE_START_BNO;
} else {
- ASSERT(XFS_IFORK_NEXTENTS(ip, whichfork) == 0);
- xfs_bmap_forkoff_reset(ip->i_mount, ip, whichfork);
+ args.fsbno = *firstblock;
+ args.type = XFS_ALLOCTYPE_NEAR_BNO;
}
- ifp->if_flags &= ~XFS_IFINLINE;
- ifp->if_flags |= XFS_IFEXTENTS;
- XFS_IFORK_FMT_SET(ip, whichfork, XFS_DINODE_FMT_EXTENTS);
+ args.total = total;
+ args.minlen = args.maxlen = args.prod = 1;
+ error = xfs_alloc_vextent(&args);
+ if (error)
+ goto done;
+
+ /* Can't fail, the space was reserved. */
+ ASSERT(args.fsbno != NULLFSBLOCK);
+ ASSERT(args.len == 1);
+ *firstblock = args.fsbno;
+ bp = xfs_btree_get_bufl(args.mp, tp, args.fsbno, 0);
+
+ /* initialise the block and copy the data */
+ init_fn(tp, bp, ip, ifp);
+
+ /* account for the change in fork size and log everything */
+ xfs_trans_log_buf(tp, bp, 0, ifp->if_bytes - 1);
+ xfs_idata_realloc(ip, -ifp->if_bytes, whichfork);
+ xfs_bmap_local_to_extents_empty(ip, whichfork);
flags |= XFS_ILOG_CORE;
+
+ xfs_iext_add(ifp, 0, 1);
+ ep = xfs_iext_get_ext(ifp, 0);
+ xfs_bmbt_set_allf(ep, 0, args.fsbno, 1, XFS_EXT_NORM);
+ trace_xfs_bmap_post_update(ip, 0,
+ whichfork == XFS_ATTR_FORK ? BMAP_ATTRFORK : 0,
+ _THIS_IP_);
+ XFS_IFORK_NEXT_SET(ip, whichfork, 1);
+ ip->i_d.di_nblocks = 1;
+ xfs_trans_mod_dquot_byino(tp, ip,
+ XFS_TRANS_DQ_BCOUNT, 1L);
+ flags |= xfs_ilog_fext(whichfork);
+
done:
*logflagsp = flags;
return error;
return error;
}
-/*
- * Block initialisation function for local to extent format conversion.
- *
- * This shouldn't actually be called by anyone, so make sure debug kernels cause
- * a noticable failure.
- */
-STATIC void
-xfs_bmap_local_to_extents_init_fn(
- struct xfs_trans *tp,
- struct xfs_buf *bp,
- struct xfs_inode *ip,
- struct xfs_ifork *ifp)
-{
- ASSERT(0);
- bp->b_ops = &xfs_bmbt_buf_ops;
- memcpy(bp->b_addr, ifp->if_u1.if_data, ifp->if_bytes);
- xfs_trans_buf_set_type(tp, bp, XFS_BLFT_BTREE_BUF);
-}
-
/*
* Called from xfs_bmap_add_attrfork to handle local format files. Each
* different data fork content type needs a different callout to do the
flags, XFS_DATA_FORK,
xfs_symlink_local_to_remote);
- return xfs_bmap_local_to_extents(tp, ip, firstblock, 1, flags,
- XFS_DATA_FORK,
- xfs_bmap_local_to_extents_init_fn);
+ /* should only be called for types that support local format data */
+ ASSERT(0);
+ return EFSCORRUPTED;
}
/*
orig_mval = mval;
orig_nmap = *nmap;
#endif
+ whichfork = (flags & XFS_BMAPI_ATTRFORK) ?
+ XFS_ATTR_FORK : XFS_DATA_FORK;
ASSERT(*nmap >= 1);
ASSERT(*nmap <= XFS_BMAP_MAX_NMAP);
ASSERT(!(flags & XFS_BMAPI_IGSTATE));
ASSERT(tp != NULL);
ASSERT(len > 0);
-
- whichfork = (flags & XFS_BMAPI_ATTRFORK) ?
- XFS_ATTR_FORK : XFS_DATA_FORK;
+ ASSERT(XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_LOCAL);
if (unlikely(XFS_TEST_ERROR(
(XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS &&
- XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE &&
- XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_LOCAL),
+ XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE),
mp, XFS_ERRTAG_BMAPIFORMAT, XFS_RANDOM_BMAPIFORMAT))) {
XFS_ERROR_REPORT("xfs_bmapi_write", XFS_ERRLEVEL_LOW, mp);
return XFS_ERROR(EFSCORRUPTED);
XFS_STATS_INC(xs_blk_mapw);
- if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL) {
- /*
- * XXX (dgc): This assumes we are only called for inodes that
- * contain content neutral data in local format. Anything that
- * contains caller-specific data in local format that needs
- * transformation to move to a block format needs to do the
- * conversion to extent format itself.
- *
- * Directory data forks and attribute forks handle this
- * themselves, but with the addition of metadata verifiers every
- * data fork in local format now contains caller specific data
- * and as such conversion through this function is likely to be
- * broken.
- *
- * The only likely user of this branch is for remote symlinks,
- * but we cannot overwrite the data fork contents of the symlink
- * (EEXIST occurs higher up the stack) and so it will never go
- * from local format to extent format here. Hence I don't think
- * this branch is ever executed intentionally and we should
- * consider removing it and asserting that xfs_bmapi_write()
- * cannot be called directly on local format forks. i.e. callers
- * are completely responsible for local to extent format
- * conversion, not xfs_bmapi_write().
- */
- error = xfs_bmap_local_to_extents(tp, ip, firstblock, total,
- &bma.logflags, whichfork,
- xfs_bmap_local_to_extents_init_fn);
- if (error)
- goto error0;
- }
-
if (*firstblock == NULLFSBLOCK) {
if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE)
bma.minleft = be16_to_cpu(ifp->if_broot->bb_level) + 1;
projects / deliverable / linux.git / blobdiff