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| author | Jiaying Zhang <jiayingz@google.com> | 2010-03-02 13:26:36 -0500 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2010-03-02 13:26:36 -0500 |
| commit | b7adc1f363e72e9131a582cc2cb00eaf83f51a39 (patch) | |
| tree | 9316acb7855ef64f051b4ee4c01f431c15cb4c1e /fs/ext4 | |
| parent | 744692dc059845b2a3022119871846e74d4f6e11 (diff) | |
| download | blackbird-op-linux-b7adc1f363e72e9131a582cc2cb00eaf83f51a39.tar.gz blackbird-op-linux-b7adc1f363e72e9131a582cc2cb00eaf83f51a39.zip | |
ext4: Use direct_IO_no_locking in ext4 dio read
Signed-off-by: Jiaying Zhang <jiayingz@google.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4')
| -rw-r--r-- | fs/ext4/inode.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index d291310aef6b..92214d4e5afa 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -3474,7 +3474,14 @@ static ssize_t ext4_ind_direct_IO(int rw, struct kiocb *iocb, } retry: - ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov, + if (rw == READ && ext4_should_dioread_nolock(inode)) + ret = blockdev_direct_IO_no_locking(rw, iocb, inode, + inode->i_sb->s_bdev, iov, + offset, nr_segs, + ext4_get_block, NULL); + else + ret = blockdev_direct_IO(rw, iocb, inode, + inode->i_sb->s_bdev, iov, offset, nr_segs, ext4_get_block, NULL); if (ret == -ENOSPC && ext4_should_retry_alloc(inode->i_sb, &retries)) |
