diff options
| author | Matthew Wilcox <matthew.r.wilcox@intel.com> | 2015-02-17 00:58:53 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-02-17 02:56:03 +0100 |
| commit | fbbbad4bc2101e452b24e6e65d3d5e11314a0b5f (patch) | |
| tree | 7d12515701e867b88856b0c7f78c9abd7a61785b /fs/ext2/xip.h | |
| parent | mm: allow page fault handlers to perform the COW (diff) | |
| download | linux-fbbbad4bc2101e452b24e6e65d3d5e11314a0b5f.tar.xz linux-fbbbad4bc2101e452b24e6e65d3d5e11314a0b5f.zip | |
vfs,ext2: introduce IS_DAX(inode)
Use an inode flag to tag inodes which should avoid using the page cache.
Convert ext2 to use it instead of mapping_is_xip(). Prevent I/Os to files
tagged with the DAX flag from falling back to buffered I/O.
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Andreas Dilger <andreas.dilger@intel.com>
Cc: Boaz Harrosh <boaz@plexistor.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ext2/xip.h')
| -rw-r--r-- | fs/ext2/xip.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/fs/ext2/xip.h b/fs/ext2/xip.h index 18b34d2f31b3..29be73781419 100644 --- a/fs/ext2/xip.h +++ b/fs/ext2/xip.h @@ -16,9 +16,7 @@ static inline int ext2_use_xip (struct super_block *sb) } int ext2_get_xip_mem(struct address_space *, pgoff_t, int, void **, unsigned long *); -#define mapping_is_xip(map) unlikely(map->a_ops->get_xip_mem) #else -#define mapping_is_xip(map) 0 #define ext2_xip_verify_sb(sb) do { } while (0) #define ext2_use_xip(sb) 0 #define ext2_clear_xip_target(inode, chain) 0 |