xfs: kill XBF_LOCK

[firefly-linux-kernel-4.4.55.git] / fs / xfs / xfs_attr.c

diff --git a/fs/xfs/xfs_attr.c b/fs/xfs/xfs_attr.c
index 65d61b948eadbc287cdc7e61b2275436c9addb54..c8ef9a9c312bc5d42fe484369d11b9272073c76d 100644 (file)
--- a/fs/xfs/xfs_attr.c
+++ b/fs/xfs/xfs_attr.c
@@ -1988,13 +1988,11 @@ xfs_attr_rmtval_get(xfs_da_args_t *args)
                        dblkno = XFS_FSB_TO_DADDR(mp, map[i].br_startblock);
                        blkcnt = XFS_FSB_TO_BB(mp, map[i].br_blockcount);
                        error = xfs_read_buf(mp, mp->m_ddev_targp, dblkno,
-                                            blkcnt, XBF_LOCK | XBF_DONT_BLOCK,
-                                            &bp);
+                                            blkcnt, XBF_DONT_BLOCK, &bp);
                        if (error)
                                return(error);
 
-                       tmp = (valuelen < XFS_BUF_SIZE(bp))
-                               ? valuelen : XFS_BUF_SIZE(bp);
+                       tmp = min_t(int, valuelen, BBTOB(bp->b_length));
                        xfs_buf_iomove(bp, 0, tmp, dst, XBRW_READ);
                        xfs_buf_relse(bp);
                        dst += tmp;
@@ -2097,6 +2095,8 @@ xfs_attr_rmtval_set(xfs_da_args_t *args)
        lblkno = args->rmtblkno;
        valuelen = args->valuelen;
        while (valuelen > 0) {
+               int buflen;
+
                /*
                 * Try to remember where we decided to put the value.
                 */
@@ -2115,14 +2115,16 @@ xfs_attr_rmtval_set(xfs_da_args_t *args)
                blkcnt = XFS_FSB_TO_BB(mp, map.br_blockcount);
 
                bp = xfs_buf_get(mp->m_ddev_targp, dblkno, blkcnt,
-                                XBF_LOCK | XBF_DONT_BLOCK);
+                                XBF_DONT_BLOCK);
                if (!bp)
                        return ENOMEM;
-               tmp = (valuelen < XFS_BUF_SIZE(bp)) ? valuelen :
-                                                       XFS_BUF_SIZE(bp);
+
+               buflen = BBTOB(bp->b_length);
+               tmp = min_t(int, valuelen, buflen);
                xfs_buf_iomove(bp, 0, tmp, src, XBRW_WRITE);
-               if (tmp < XFS_BUF_SIZE(bp))
-                       xfs_buf_zero(bp, tmp, XFS_BUF_SIZE(bp) - tmp);
+               if (tmp < buflen)
+                       xfs_buf_zero(bp, tmp, buflen - tmp);
+
                error = xfs_bwrite(bp); /* GROT: NOTE: synchronous write */
                xfs_buf_relse(bp);
                if (error)