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| author | Christoph Hellwig <hch@infradead.org> | 2013-09-04 15:04:39 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2013-09-04 09:23:46 -0400 |
| commit | 7b7a8665edd8db733980389b098530f9e4f630b2 (patch) | |
| tree | 968d570a9f0c4d861226aefed2f5f97a131c8d53 /fs/ocfs2/aops.c | |
| parent | 4b6ccca701ef5977d0ffbc2c932430dea88b38b6 (diff) | |
| download | linux-7b7a8665edd8db733980389b098530f9e4f630b2.tar.gz linux-7b7a8665edd8db733980389b098530f9e4f630b2.tar.bz2 linux-7b7a8665edd8db733980389b098530f9e4f630b2.zip | |
direct-io: Implement generic deferred AIO completions
Add support to the core direct-io code to defer AIO completions to user
context using a workqueue. This replaces opencoded and less efficient
code in XFS and ext4 (we save a memory allocation for each direct IO)
and will be needed to properly support O_(D)SYNC for AIO.
The communication between the filesystem and the direct I/O code requires
a new buffer head flag, which is a bit ugly but not avoidable until the
direct I/O code stops abusing the buffer_head structure for communicating
with the filesystems.
Currently this creates a per-superblock unbound workqueue for these
completions, which is taken from an earlier patch by Jan Kara. I'm
not really convinced about this use and would prefer a "normal" global
workqueue with a high concurrency limit, but this needs further discussion.
JK: Fixed ext4 part, dynamic allocation of the workqueue.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/ocfs2/aops.c')
| -rw-r--r-- | fs/ocfs2/aops.c | 8 |
1 files changed, 1 insertions, 7 deletions
diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c index 2abf97b2a592..94417a85ce6e 100644 --- a/fs/ocfs2/aops.c +++ b/fs/ocfs2/aops.c @@ -565,9 +565,7 @@ bail: static void ocfs2_dio_end_io(struct kiocb *iocb, loff_t offset, ssize_t bytes, - void *private, - int ret, - bool is_async) + void *private) { struct inode *inode = file_inode(iocb->ki_filp); int level; @@ -592,10 +590,6 @@ static void ocfs2_dio_end_io(struct kiocb *iocb, level = ocfs2_iocb_rw_locked_level(iocb); ocfs2_rw_unlock(inode, level); - - inode_dio_done(inode); - if (is_async) - aio_complete(iocb, ret, 0); } /* |