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path: root/fs/xfs/linux-2.6/xfs_fs_subr.c
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Diffstat (limited to 'fs/xfs/linux-2.6/xfs_fs_subr.c')
-rw-r--r--fs/xfs/linux-2.6/xfs_fs_subr.c23
1 files changed, 20 insertions, 3 deletions
diff --git a/fs/xfs/linux-2.6/xfs_fs_subr.c b/fs/xfs/linux-2.6/xfs_fs_subr.c
index 36caa6d957df..5aeb77776961 100644
--- a/fs/xfs/linux-2.6/xfs_fs_subr.c
+++ b/fs/xfs/linux-2.6/xfs_fs_subr.c
@@ -24,6 +24,10 @@ int fs_noerr(void) { return 0; }
int fs_nosys(void) { return ENOSYS; }
void fs_noval(void) { return; }
+/*
+ * note: all filemap functions return negative error codes. These
+ * need to be inverted before returning to the xfs core functions.
+ */
void
xfs_tosspages(
xfs_inode_t *ip,
@@ -53,7 +57,7 @@ xfs_flushinval_pages(
if (!ret)
truncate_inode_pages(mapping, first);
}
- return ret;
+ return -ret;
}
int
@@ -72,10 +76,23 @@ xfs_flush_pages(
xfs_iflags_clear(ip, XFS_ITRUNCATED);
ret = filemap_fdatawrite(mapping);
if (flags & XFS_B_ASYNC)
- return ret;
+ return -ret;
ret2 = filemap_fdatawait(mapping);
if (!ret)
ret = ret2;
}
- return ret;
+ return -ret;
+}
+
+int
+xfs_wait_on_pages(
+ xfs_inode_t *ip,
+ xfs_off_t first,
+ xfs_off_t last)
+{
+ struct address_space *mapping = VFS_I(ip)->i_mapping;
+
+ if (mapping_tagged(mapping, PAGECACHE_TAG_WRITEBACK))
+ return -filemap_fdatawait(mapping);
+ return 0;
}