ide: move ioctls handling to ide-ioctls.c

[linux-2.6-omap-h63xx.git] / fs / xfs / xfs_iomap.c

diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c
index fb3cf11914195ce85dbea2f5bf90ff3dde668bf4..67f22b2b44b3c41c51ce3ac6c1f911f5db47b181 100644 (file)
--- a/fs/xfs/xfs_iomap.c
+++ b/fs/xfs/xfs_iomap.c
@@ -196,14 +196,14 @@ xfs_iomap(
                break;
        case BMAPI_WRITE:
                xfs_iomap_enter_trace(XFS_IOMAP_WRITE_ENTER, ip, offset, count);
-               lockmode = XFS_ILOCK_EXCL|XFS_EXTSIZE_WR;
+               lockmode = XFS_ILOCK_EXCL;
                if (flags & BMAPI_IGNSTATE)
                        bmapi_flags |= XFS_BMAPI_IGSTATE|XFS_BMAPI_ENTIRE;
                xfs_ilock(ip, lockmode);
                break;
        case BMAPI_ALLOCATE:
                xfs_iomap_enter_trace(XFS_IOMAP_ALLOC_ENTER, ip, offset, count);
-               lockmode = XFS_ILOCK_SHARED|XFS_EXTSIZE_RD;
+               lockmode = XFS_ILOCK_SHARED;
                bmapi_flags = XFS_BMAPI_ENTIRE;
 
                /* Attempt non-blocking lock */
@@ -523,8 +523,7 @@ xfs_iomap_write_direct(
                goto error_out;
        }
 
-       if (unlikely(!imap.br_startblock &&
-                    !(XFS_IS_REALTIME_INODE(ip)))) {
+       if (!(imap.br_startblock || XFS_IS_REALTIME_INODE(ip))) {
                error = xfs_cmn_err_fsblock_zero(ip, &imap);
                goto error_out;
        }
@@ -624,7 +623,7 @@ xfs_iomap_write_delay(
        int             prealloc, fsynced = 0;
        int             error;
 
-       ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE) != 0);
+       ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
 
        /*
         * Make sure that the dquots are there. This doesn't hold
@@ -686,8 +685,7 @@ retry:
                goto retry;
        }
 
-       if (unlikely(!imap[0].br_startblock &&
-                    !(XFS_IS_REALTIME_INODE(ip))))
+       if (!(imap[0].br_startblock || XFS_IS_REALTIME_INODE(ip)))
                return xfs_cmn_err_fsblock_zero(ip, &imap[0]);
 
        *ret_imap = imap[0];
@@ -838,9 +836,9 @@ xfs_iomap_write_allocate(
                 * See if we were able to allocate an extent that
                 * covers at least part of the callers request
                 */
-               if (unlikely(!imap.br_startblock &&
-                            XFS_IS_REALTIME_INODE(ip)))
+               if (!(imap.br_startblock || XFS_IS_REALTIME_INODE(ip)))
                        return xfs_cmn_err_fsblock_zero(ip, &imap);
+
                if ((offset_fsb >= imap.br_startoff) &&
                    (offset_fsb < (imap.br_startoff +
                                   imap.br_blockcount))) {
@@ -891,6 +889,16 @@ xfs_iomap_write_unwritten(
        count_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)offset + count);
        count_fsb = (xfs_filblks_t)(count_fsb - offset_fsb);
 
+       /*
+        * Reserve enough blocks in this transaction for two complete extent
+        * btree splits.  We may be converting the middle part of an unwritten
+        * extent and in this case we will insert two new extents in the btree
+        * each of which could cause a full split.
+        *
+        * This reservation amount will be used in the first call to
+        * xfs_bmbt_split() to select an AG with enough space to satisfy the
+        * rest of the operation.
+        */
        resblks = XFS_DIOSTRAT_SPACE_RES(mp, 0) << 1;
 
        do {
@@ -934,8 +942,7 @@ xfs_iomap_write_unwritten(
                if (error)
                        return XFS_ERROR(error);
 
-               if (unlikely(!imap.br_startblock &&
-                            !(XFS_IS_REALTIME_INODE(ip))))
+               if (!(imap.br_startblock || XFS_IS_REALTIME_INODE(ip)))
                        return xfs_cmn_err_fsblock_zero(ip, &imap);
 
                if ((numblks_fsb = imap.br_blockcount) == 0) {