eCryptfs: Fix lockdep warning in miscdev operations

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / fs / xfs / xfs_bmap.c

diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c
index 85e7e327bcd87fdbc7efcb1d707612bd11369196..58b815ec8c91f6ef70fef988eecfd74533bd08b0 100644 (file)
--- a/fs/xfs/xfs_bmap.c
+++ b/fs/xfs/xfs_bmap.c
@@ -41,7 +41,6 @@
 #include "xfs_rtalloc.h"
 #include "xfs_error.h"
 #include "xfs_attr_leaf.h"
-#include "xfs_rw.h"
 #include "xfs_quota.h"
 #include "xfs_trans_space.h"
 #include "xfs_buf_item.h"
@@ -4527,7 +4526,7 @@ out_unreserve_blocks:
                xfs_icsb_modify_counters(mp, XFS_SBS_FDBLOCKS, alen, 0);
 out_unreserve_quota:
        if (XFS_IS_QUOTA_ON(mp))
-               xfs_trans_unreserve_quota_nblks(NULL, ip, alen, 0, rt ?
+               xfs_trans_unreserve_quota_nblks(NULL, ip, (long)alen, 0, rt ?
                                XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS);
        return error;
 }
@@ -5621,8 +5620,20 @@ xfs_getbmap(
                                XFS_FSB_TO_BB(mp, map[i].br_blockcount);
                        out[cur_ext].bmv_unused1 = 0;
                        out[cur_ext].bmv_unused2 = 0;
-                       ASSERT(((iflags & BMV_IF_DELALLOC) != 0) ||
-                             (map[i].br_startblock != DELAYSTARTBLOCK));
+
+                       /*
+                        * delayed allocation extents that start beyond EOF can
+                        * occur due to speculative EOF allocation when the
+                        * delalloc extent is larger than the largest freespace
+                        * extent at conversion time. These extents cannot be
+                        * converted by data writeback, so can exist here even
+                        * if we are not supposed to be finding delalloc
+                        * extents.
+                        */
+                       if (map[i].br_startblock == DELAYSTARTBLOCK &&
+                           map[i].br_startoff <= XFS_B_TO_FSB(mp, XFS_ISIZE(ip)))
+                               ASSERT((iflags & BMV_IF_DELALLOC) != 0);
+
                         if (map[i].br_startblock == HOLESTARTBLOCK &&
                            whichfork == XFS_ATTR_FORK) {
                                /* came to the end of attribute fork */
@@ -6157,3 +6168,16 @@ next_block:
 
        return error;
 }
+
+/*
+ * Convert the given file system block to a disk block.  We have to treat it
+ * differently based on whether the file is a real time file or not, because the
+ * bmap code does.
+ */
+xfs_daddr_t
+xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb)
+{
+       return (XFS_IS_REALTIME_INODE(ip) ? \
+                (xfs_daddr_t)XFS_FSB_TO_BB((ip)->i_mount, (fsb)) : \
+                XFS_FSB_TO_DADDR((ip)->i_mount, (fsb)));
+}