Merge tag 'nfs-for-3.12-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

[platform/adaptation/renesas_rcar/renesas_kernel.git] / fs / xfs / xfs_aops.c

diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
index e11d654..e51e581 100644 (file)
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -28,9 +28,9 @@
 #include "xfs_alloc.h"
 #include "xfs_error.h"
 #include "xfs_iomap.h"
-#include "xfs_vnodeops.h"
 #include "xfs_trace.h"
 #include "xfs_bmap.h"
+#include "xfs_bmap_util.h"
 #include <linux/aio.h>
 #include <linux/gfp.h>
 #include <linux/mpage.h>
@@ -108,7 +108,7 @@ xfs_setfilesize_trans_alloc(
 
        tp = xfs_trans_alloc(mp, XFS_TRANS_FSYNC_TS);
 
-       error = xfs_trans_reserve(tp, 0, XFS_FSYNC_TS_LOG_RES(mp), 0, 0, 0);
+       error = xfs_trans_reserve(tp, &M_RES(mp)->tr_fsyncts, 0, 0);
        if (error) {
                xfs_trans_cancel(tp, 0);
                return error;
@@ -440,7 +440,7 @@ xfs_start_page_writeback(
                end_page_writeback(page);
 }
 
-static inline int bio_add_buffer(struct bio *bio, struct buffer_head *bh)
+static inline int xfs_bio_add_buffer(struct bio *bio, struct buffer_head *bh)
 {
        return bio_add_page(bio, bh->b_page, bh->b_size, bh_offset(bh));
 }
@@ -514,7 +514,7 @@ xfs_submit_ioend(
                                goto retry;
                        }
 
-                       if (bio_add_buffer(bio, bh) != bh->b_size) {
+                       if (xfs_bio_add_buffer(bio, bh) != bh->b_size) {
                                xfs_submit_ioend_bio(wbc, ioend, bio);
                                goto retry;
                        }
@@ -1498,13 +1498,26 @@ xfs_vm_write_failed(
        loff_t                  pos,
        unsigned                len)
 {
-       loff_t                  block_offset = pos & PAGE_MASK;
+       loff_t                  block_offset;
        loff_t                  block_start;
        loff_t                  block_end;
        loff_t                  from = pos & (PAGE_CACHE_SIZE - 1);
        loff_t                  to = from + len;
        struct buffer_head      *bh, *head;
 
+       /*
+        * The request pos offset might be 32 or 64 bit, this is all fine
+        * on 64-bit platform.  However, for 64-bit pos request on 32-bit
+        * platform, the high 32-bit will be masked off if we evaluate the
+        * block_offset via (pos & PAGE_MASK) because the PAGE_MASK is
+        * 0xfffff000 as an unsigned long, hence the result is incorrect
+        * which could cause the following ASSERT failed in most cases.
+        * In order to avoid this, we can evaluate the block_offset of the
+        * start of the page by using shifts rather than masks the mismatch
+        * problem.
+        */
+       block_offset = (pos >> PAGE_CACHE_SHIFT) << PAGE_CACHE_SHIFT;
+
        ASSERT(block_offset + from == pos);
 
        head = page_buffers(page);
@@ -1569,7 +1582,7 @@ xfs_vm_write_begin(
                unlock_page(page);
 
                if (pos + len > i_size_read(inode))
-                       truncate_pagecache(inode, pos + len, i_size_read(inode));
+                       truncate_pagecache(inode, i_size_read(inode));
 
                page_cache_release(page);
                page = NULL;
@@ -1605,7 +1618,7 @@ xfs_vm_write_end(
                loff_t          to = pos + len;
 
                if (to > isize) {
-                       truncate_pagecache(inode, to, isize);
+                       truncate_pagecache(inode, isize);
                        xfs_vm_kill_delalloc_range(inode, isize, to);
                }
        }