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| author |   Al Viro <viro@zeniv.linux.org.uk> | 2016-09-22 23:35:42 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2016-10-05 18:23:56 -0400 |
| commit | 82c156f853840645604acd7c2cebcb75ed1b6652 (patch) | |
| tree | 19d74fbaafb300aa05523ad0ecb60f24f82c5d1f /fs/xfs | |
| parent | new iov_iter flavour: pipe-backed (diff) | |
| download | linux-dev-82c156f853840645604acd7c2cebcb75ed1b6652.tar.xz linux-dev-82c156f853840645604acd7c2cebcb75ed1b6652.zip | |
switch generic_file_splice_read() to use of ->read_iter()
... and kill the ->splice_read() instances that can be switched to it
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/xfs')
| -rw-r--r-- | fs/xfs/xfs_file.c | 41 | ||||
| -rw-r--r-- | fs/xfs/xfs_trace.h | 1 |
2 files changed, 1 insertions, 41 deletions
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index e612a0233710..92f16cfb81e8 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -399,45 +399,6 @@ xfs_file_read_iter( return ret; } -STATIC ssize_t -xfs_file_splice_read( - struct file *infilp, - loff_t *ppos, - struct pipe_inode_info *pipe, - size_t count, - unsigned int flags) -{ - struct xfs_inode *ip = XFS_I(infilp->f_mapping->host); - ssize_t ret; - - XFS_STATS_INC(ip->i_mount, xs_read_calls); - - if (XFS_FORCED_SHUTDOWN(ip->i_mount)) - return -EIO; - - trace_xfs_file_splice_read(ip, count, *ppos); - - /* - * DAX inodes cannot ues the page cache for splice, so we have to push - * them through the VFS IO path. This means it goes through - * ->read_iter, which for us takes the XFS_IOLOCK_SHARED. Hence we - * cannot lock the splice operation at this level for DAX inodes. - */ - if (IS_DAX(VFS_I(ip))) { - ret = default_file_splice_read(infilp, ppos, pipe, count, - flags); - goto out; - } - - xfs_rw_ilock(ip, XFS_IOLOCK_SHARED); - ret = generic_file_splice_read(infilp, ppos, pipe, count, flags); - xfs_rw_iunlock(ip, XFS_IOLOCK_SHARED); -out: - if (ret > 0) - XFS_STATS_ADD(ip->i_mount, xs_read_bytes, ret); - return ret; -} - /* * Zero any on disk space between the current EOF and the new, larger EOF. * @@ -1652,7 +1613,7 @@ const struct file_operations xfs_file_operations = { .llseek = xfs_file_llseek, .read_iter = xfs_file_read_iter, .write_iter = xfs_file_write_iter, - .splice_read = xfs_file_splice_read, + .splice_read = generic_file_splice_read, .splice_write = iter_file_splice_write, .unlocked_ioctl = xfs_file_ioctl, #ifdef CONFIG_COMPAT diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h index d303a665dba9..f31db446482f 100644 --- a/fs/xfs/xfs_trace.h +++ b/fs/xfs/xfs_trace.h @@ -1170,7 +1170,6 @@ DEFINE_RW_EVENT(xfs_file_dax_read); DEFINE_RW_EVENT(xfs_file_buffered_write); DEFINE_RW_EVENT(xfs_file_direct_write); DEFINE_RW_EVENT(xfs_file_dax_write); -DEFINE_RW_EVENT(xfs_file_splice_read); DECLARE_EVENT_CLASS(xfs_page_class, TP_PROTO(struct inode *inode, struct page *page, unsigned long off, |