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iomap: add a private argument for iomap_file_buffered_write

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In order to switch fuse over to using iomap for buffered writes we need
to be able to have the struct file for the original write, in case we
have to read in the page to make it uptodate.  Handle this by using the
existing private field in the iomap_iter, and add the argument to
iomap_file_buffered_write.  This will allow us to pass the file in
through the iomap buffered write path, and is flexible for any other
file systems needs.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Link: https://lore.kernel.org/r/7f55c7c32275004ba00cddf862d970e6e633f750.1724755651.git.josef@toxicpanda.com
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Josef Bacik 2024-08-27 06:51:36 -04:00 committed by Christian Brauner
parent 51eac77be0
commit f143d1a48d
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GPG Key ID: 91C61BC06578DCA2
6 changed files with 7 additions and 6 deletions
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2
block/fops.c
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@ -665,7 +665,7 @@ blkdev_direct_write(struct kiocb *iocb, struct iov_iter *from)
static ssize_t blkdev_buffered_write(struct kiocb *iocb, struct iov_iter *from)
{
return iomap_file_buffered_write(iocb, from, &blkdev_iomap_ops);
return iomap_file_buffered_write(iocb, from, &blkdev_iomap_ops, NULL);
}
/*

2
fs/gfs2/file.c
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@ -1057,7 +1057,7 @@ retry:
}
pagefault_disable();
ret = iomap_file_buffered_write(iocb, from, &gfs2_iomap_ops);
ret = iomap_file_buffered_write(iocb, from, &gfs2_iomap_ops, NULL);
pagefault_enable();
if (ret > 0)
written += ret;

3
fs/iomap/buffered-io.c
View File

@ -1022,13 +1022,14 @@ retry:
ssize_t
iomap_file_buffered_write(struct kiocb *iocb, struct iov_iter *i,
const struct iomap_ops *ops)
const struct iomap_ops *ops, void *private)
{
struct iomap_iter iter = {
.inode = iocb->ki_filp->f_mapping->host,
.pos = iocb->ki_pos,
.len = iov_iter_count(i),
.flags = IOMAP_WRITE,
.private = private,
};
ssize_t ret;

2
fs/xfs/xfs_file.c
View File

@ -760,7 +760,7 @@ write_retry:
trace_xfs_file_buffered_write(iocb, from);
ret = iomap_file_buffered_write(iocb, from,
&xfs_buffered_write_iomap_ops);
&xfs_buffered_write_iomap_ops, NULL);
/*
* If we hit a space limit, try to free up some lingering preallocated

2
fs/zonefs/file.c
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@ -563,7 +563,7 @@ static ssize_t zonefs_file_buffered_write(struct kiocb *iocb,
if (ret <= 0)
goto inode_unlock;
ret = iomap_file_buffered_write(iocb, from, &zonefs_write_iomap_ops);
ret = iomap_file_buffered_write(iocb, from, &zonefs_write_iomap_ops, NULL);
if (ret == -EIO)
zonefs_io_error(inode, true);

2
include/linux/iomap.h
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@ -257,7 +257,7 @@ static inline const struct iomap *iomap_iter_srcmap(const struct iomap_iter *i)
}
ssize_t iomap_file_buffered_write(struct kiocb *iocb, struct iov_iter *from,
const struct iomap_ops *ops);
const struct iomap_ops *ops, void *private);
int iomap_file_buffered_write_punch_delalloc(struct inode *inode,
struct iomap *iomap, loff_t pos, loff_t length, ssize_t written,
int (*punch)(struct inode *inode, loff_t pos, loff_t length));