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UPSTREAM: gfs2: Add wrapper for iomap_file_buffered_write 

commit 2eb7509a05443048fb4df60b782de3f03c6c298b upstream

Add a wrapper around iomap_file_buffered_write.  We'll add code for when
the operation needs to be retried here later.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit b88b998579)
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I144fa4b02e35bb8a1c9ac1f1f0ed149c5cdf91b6
This commit is contained in:
Andreas Gruenbacher 2022-04-15 06:28:42 +08:00 committed by Greg Kroah-Hartman
parent 6603584106
commit 3b46c843f2
1 changed files with 17 additions and 10 deletions
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27
fs/gfs2/file.c
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@ -877,6 +877,20 @@ static ssize_t gfs2_file_read_iter(struct kiocb *iocb, struct iov_iter *to)
return written ? written : ret;
}
static ssize_t gfs2_file_buffered_write(struct kiocb *iocb, struct iov_iter *from)
{
struct file *file = iocb->ki_filp;
struct inode *inode = file_inode(file);
ssize_t ret;
current->backing_dev_info = inode_to_bdi(inode);
ret = iomap_file_buffered_write(iocb, from, &gfs2_iomap_ops);
current->backing_dev_info = NULL;
if (ret > 0)
iocb->ki_pos += ret;
return ret;
}
/**
* gfs2_file_write_iter - Perform a write to a file
* @iocb: The io context
@ -928,9 +942,7 @@ static ssize_t gfs2_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
goto out_unlock;
iocb->ki_flags |= IOCB_DSYNC;
current->backing_dev_info = inode_to_bdi(inode);
buffered = iomap_file_buffered_write(iocb, from, &gfs2_iomap_ops);
current->backing_dev_info = NULL;
buffered = gfs2_file_buffered_write(iocb, from);
if (unlikely(buffered <= 0)) {
if (!ret)
ret = buffered;
@ -944,7 +956,6 @@ static ssize_t gfs2_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
* the direct I/O range as we don't know if the buffered pages
* made it to disk.
*/
iocb->ki_pos += buffered;
ret2 = generic_write_sync(iocb, buffered);
invalidate_mapping_pages(mapping,
(iocb->ki_pos - buffered) >> PAGE_SHIFT,
@ -952,14 +963,10 @@ static ssize_t gfs2_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
if (!ret || ret2 > 0)
ret += ret2;
} else {
current->backing_dev_info = inode_to_bdi(inode);
ret = iomap_file_buffered_write(iocb, from, &gfs2_iomap_ops);
current->backing_dev_info = NULL;
if (likely(ret > 0)) {
iocb->ki_pos += ret;
ret = gfs2_file_buffered_write(iocb, from);
if (likely(ret > 0))
ret = generic_write_sync(iocb, ret);
}
}
out_unlock:
inode_unlock(inode);