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| author | Ross Zwisler <ross.zwisler@linux.intel.com> | 2015-02-16 15:59:38 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-02-16 17:56:04 -0800 |
| commit | 923ae0ff9250430133b3310fe62c47538cf1cbc1 (patch) | |
| tree | 3c4194cbedbe77e719bf7c8762fba5362ec26032 /fs/ext4/indirect.c | |
| parent | 25726bc15731d42112b579cf73f30edbc43d3973 (diff) | |
| download | linux-stable-923ae0ff9250430133b3310fe62c47538cf1cbc1.tar.gz linux-stable-923ae0ff9250430133b3310fe62c47538cf1cbc1.tar.bz2 linux-stable-923ae0ff9250430133b3310fe62c47538cf1cbc1.zip | |
ext4: add DAX functionality
This is a port of the DAX functionality found in the current version of
ext2.
[matthew.r.wilcox@intel.com: heavily tweaked]
[akpm@linux-foundation.org: remap_pages went away]
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Cc: Boaz Harrosh <boaz@plexistor.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
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/ext4/indirect.c')
| -rw-r--r-- | fs/ext4/indirect.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/fs/ext4/indirect.c b/fs/ext4/indirect.c index 36b369697a13..6b9878a24182 100644 --- a/fs/ext4/indirect.c +++ b/fs/ext4/indirect.c @@ -689,14 +689,22 @@ retry: inode_dio_done(inode); goto locked; } - ret = __blockdev_direct_IO(rw, iocb, inode, - inode->i_sb->s_bdev, iter, offset, - ext4_get_block, NULL, NULL, 0); + if (IS_DAX(inode)) + ret = dax_do_io(rw, iocb, inode, iter, offset, + ext4_get_block, NULL, 0); + else + ret = __blockdev_direct_IO(rw, iocb, inode, + inode->i_sb->s_bdev, iter, offset, + ext4_get_block, NULL, NULL, 0); inode_dio_done(inode); } else { locked: - ret = blockdev_direct_IO(rw, iocb, inode, iter, - offset, ext4_get_block); + if (IS_DAX(inode)) + ret = dax_do_io(rw, iocb, inode, iter, offset, + ext4_get_block, NULL, DIO_LOCKING); + else + ret = blockdev_direct_IO(rw, iocb, inode, iter, + offset, ext4_get_block); if (unlikely((rw & WRITE) && ret < 0)) { loff_t isize = i_size_read(inode); |