diff options
| author | Bob Peterson <rpeterso@redhat.com> | 2017-02-16 16:27:16 +0100 |
|---|---|---|
| committer | Andreas Gruenbacher <agruenba@redhat.com> | 2017-10-31 14:26:33 +0100 |
| commit | 3974320ca6aa68d479051f208d5c95afd1e47a4c (patch) | |
| tree | 6ffea2a1d15f260142da64d7fa410baaa93b809b /fs/gfs2/bmap.h | |
| parent | GFS2: Make height info part of metapath (diff) | |
| download | linux-3974320ca6aa68d479051f208d5c95afd1e47a4c.tar.xz linux-3974320ca6aa68d479051f208d5c95afd1e47a4c.zip | |
GFS2: Implement iomap for block_map
This patch implements iomap for block mapping, and switches the
block_map function to use it under the covers.
The additional IOMAP_F_BOUNDARY iomap flag indicates when iomap has
reached a "metadata boundary" and fetching the next mapping is likely to
incur an additional I/O. This flag is used for setting the bh buffer
boundary flag.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Diffstat (limited to 'fs/gfs2/bmap.h')
| -rw-r--r-- | fs/gfs2/bmap.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/gfs2/bmap.h b/fs/gfs2/bmap.h index 81ded5e2aaa2..443cc182cf18 100644 --- a/fs/gfs2/bmap.h +++ b/fs/gfs2/bmap.h @@ -10,6 +10,8 @@ #ifndef __BMAP_DOT_H__ #define __BMAP_DOT_H__ +#include <linux/iomap.h> + #include "inode.h" struct inode; @@ -47,6 +49,8 @@ static inline void gfs2_write_calc_reserv(const struct gfs2_inode *ip, extern int gfs2_unstuff_dinode(struct gfs2_inode *ip, struct page *page); extern int gfs2_block_map(struct inode *inode, sector_t lblock, struct buffer_head *bh, int create); +extern int gfs2_iomap_begin(struct inode *inode, loff_t pos, loff_t length, + unsigned flags, struct iomap *iomap); extern int gfs2_extent_map(struct inode *inode, u64 lblock, int *new, u64 *dblock, unsigned *extlen); extern int gfs2_setattr_size(struct inode *inode, u64 size); |