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| author | Bob Peterson | 2017-02-16 16:27:16 +0100 |
|---|---|---|
| committer | Andreas Gruenbacher | 2017-10-31 14:26:33 +0100 |
| commit | 3974320ca6aa68d479051f208d5c95afd1e47a4c (patch) | |
| tree | 6ffea2a1d15f260142da64d7fa410baaa93b809b /include/linux/iomap.h | |
| parent | GFS2: Make height info part of metapath (diff) | |
| download | kernel-qcow2-linux-3974320ca6aa68d479051f208d5c95afd1e47a4c.tar.gz kernel-qcow2-linux-3974320ca6aa68d479051f208d5c95afd1e47a4c.tar.xz kernel-qcow2-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 'include/linux/iomap.h')
| -rw-r--r-- | include/linux/iomap.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/iomap.h b/include/linux/iomap.h index 2b0790dbd6ea..a61be86710b5 100644 --- a/include/linux/iomap.h +++ b/include/linux/iomap.h @@ -21,7 +21,8 @@ struct vm_fault; /* * Flags for all iomap mappings: */ -#define IOMAP_F_NEW 0x01 /* blocks have been newly allocated */ +#define IOMAP_F_NEW 0x01 /* blocks have been newly allocated */ +#define IOMAP_F_BOUNDARY 0x02 /* mapping ends at metadata boundary */ /* * Flags that only need to be reported for IOMAP_REPORT requests: |