From: Bob Peterson <[email protected]>

This patch switches GFS2's implementation of fiemap from the old
block_map code to the new iomap interface.

Signed-off-by: Bob Peterson <[email protected]>
Signed-off-by: Andreas Gruenbacher <[email protected]>
---
 fs/gfs2/Kconfig |  1 +
 fs/gfs2/inode.c | 22 +++++++++++++++-------
 2 files changed, 16 insertions(+), 7 deletions(-)

diff --git a/fs/gfs2/Kconfig b/fs/gfs2/Kconfig
index 90c6a8f..43c827a 100644
--- a/fs/gfs2/Kconfig
+++ b/fs/gfs2/Kconfig
@@ -4,6 +4,7 @@ config GFS2_FS
        select FS_POSIX_ACL
        select CRC32
        select QUOTACTL
+       select FS_IOMAP
        help
          A cluster filesystem.
 
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index 9f605ea..9ed2e91 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -18,7 +18,7 @@
 #include <linux/posix_acl.h>
 #include <linux/gfs2_ondisk.h>
 #include <linux/crc32.h>
-#include <linux/fiemap.h>
+#include <linux/iomap.h>
 #include <linux/security.h>
 #include <linux/uaccess.h>
 
@@ -1996,6 +1996,17 @@ static int gfs2_getattr(const struct path *path, struct 
kstat *stat,
        return 0;
 }
 
+static int gfs2_iomap_begin(struct inode *inode, loff_t offset,
+                           loff_t length, unsigned flags,
+                           struct iomap *iomap)
+{
+       return gfs2_get_iomap(inode, offset, length, flags, iomap);
+}
+
+const struct iomap_ops gfs2_iomap_ops = {
+       .iomap_begin = gfs2_iomap_begin,
+};
+
 static int gfs2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
                       u64 start, u64 len)
 {
@@ -2003,10 +2014,6 @@ static int gfs2_fiemap(struct inode *inode, struct 
fiemap_extent_info *fieinfo,
        struct gfs2_holder gh;
        int ret;
 
-       ret = fiemap_check_flags(fieinfo, FIEMAP_FLAG_SYNC);
-       if (ret)
-               return ret;
-
        inode_lock(inode);
 
        ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, 0, &gh);
@@ -2018,6 +2025,7 @@ static int gfs2_fiemap(struct inode *inode, struct 
fiemap_extent_info *fieinfo,
                u64 size = i_size_read(inode);
                u32 flags = FIEMAP_EXTENT_LAST|FIEMAP_EXTENT_NOT_ALIGNED|
                            FIEMAP_EXTENT_DATA_INLINE;
+
                phys += sizeof(struct gfs2_dinode);
                phys += start;
                if (start + len > size)
@@ -2028,11 +2036,11 @@ static int gfs2_fiemap(struct inode *inode, struct 
fiemap_extent_info *fieinfo,
                if (ret == 1)
                        ret = 0;
        } else {
-               ret = __generic_block_fiemap(inode, fieinfo, start, len,
-                                            gfs2_block_map);
+               ret = iomap_fiemap(inode, fieinfo, start, len, &gfs2_iomap_ops);
        }
 
        gfs2_glock_dq_uninit(&gh);
+
 out:
        inode_unlock(inode);
        return ret;
-- 
2.7.5

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