[PATCH] introduce a "kernel-internal pipe object" abstraction

separate out the 'internal pipe object' abstraction, and make it
usable to splice. This cleans up and fixes several aspects of the
internal splice APIs and the pipe code:

 - pipes: the allocation and freeing of pipe_inode_info is now more symmetric
   and more streamlined with existing kernel practices.

 - splice: small micro-optimization: less pointer dereferencing in splice
   methods

Signed-off-by: Ingo Molnar <mingo@elte.hu>

Update XFS for the ->splice_read/->splice_write changes.

Signed-off-by: Jens Axboe <axboe@suse.de>

1 files changed, 4 insertions, 4 deletions

diff --git a/fs/xfs/linux-2.6/xfs_file.c b/fs/xfs/linux-2.6/xfs_file.c
index ae4c4754ed31..269721af02f3 100644
--- a/fs/xfs/linux-2.6/xfs_file.c
+++ b/fs/xfs/linux-2.6/xfs_file.c
@@ -252,7 +252,7 @@ xfs_file_sendfile_invis(
 STATIC ssize_t
 xfs_file_splice_read(
         struct file             *infilp,
-        struct inode            *pipe,
+        struct pipe_inode_info  *pipe,
         size_t                  len,
         unsigned int            flags)
 {
@@ -266,7 +266,7 @@ xfs_file_splice_read(
 STATIC ssize_t
 xfs_file_splice_read_invis(
         struct file             *infilp,
-        struct inode            *pipe,
+        struct pipe_inode_info  *pipe,
         size_t                  len,
         unsigned int            flags)
 {
@@ -279,7 +279,7 @@ xfs_file_splice_read_invis(
 
 STATIC ssize_t
 xfs_file_splice_write(
-        struct inode            *pipe,
+        struct pipe_inode_info  *pipe,
         struct file             *outfilp,
         size_t                  len,
         unsigned int            flags)
@@ -293,7 +293,7 @@ xfs_file_splice_write(
 
 STATIC ssize_t
 xfs_file_splice_write_invis(
-        struct inode            *pipe,
+        struct pipe_inode_info  *pipe,
         struct file             *outfilp,
         size_t                  len,
         unsigned int            flags)