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iomap: pass private data to iomap_page_mkwrite

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Allow the file system to pass private data which can be used by the
iomap_begin and iomap_end methods through the private pointer in the
iomap_iter structure.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20250206064035.2323428-10-hch@lst.de
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Christoph Hellwig 2025-02-06 07:40:07 +01:00 committed by Christian Brauner
parent d06244c60a
commit 02b39c4655
No known key found for this signature in database
GPG key ID: 91C61BC06578DCA2
4 changed files with 8 additions and 6 deletions
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4
fs/iomap/buffered-io.c
View file

@ -1489,11 +1489,13 @@ static loff_t iomap_folio_mkwrite_iter(struct iomap_iter *iter,
return length;
}
vm_fault_t iomap_page_mkwrite(struct vm_fault *vmf, const struct iomap_ops *ops)
vm_fault_t iomap_page_mkwrite(struct vm_fault *vmf, const struct iomap_ops *ops,
void *private)
{
struct iomap_iter iter = {
.inode = file_inode(vmf->vma->vm_file),
.flags = IOMAP_WRITE | IOMAP_FAULT,
.private = private,
};
struct folio *folio = page_folio(vmf->page);
ssize_t ret;

3
fs/xfs/xfs_file.c
View file

@ -1511,7 +1511,8 @@ xfs_write_fault(
if (IS_DAX(inode))
ret = xfs_dax_fault_locked(vmf, order, true);
else
ret = iomap_page_mkwrite(vmf, &xfs_buffered_write_iomap_ops);
ret = iomap_page_mkwrite(vmf, &xfs_buffered_write_iomap_ops,
NULL);
xfs_iunlock(ip, lock_mode);
sb_end_pagefault(inode->i_sb);

2
fs/zonefs/file.c
View file

@ -299,7 +299,7 @@ static vm_fault_t zonefs_filemap_page_mkwrite(struct vm_fault *vmf)
/* Serialize against truncates */
filemap_invalidate_lock_shared(inode->i_mapping);
ret = iomap_page_mkwrite(vmf, &zonefs_write_iomap_ops);
ret = iomap_page_mkwrite(vmf, &zonefs_write_iomap_ops, NULL);
filemap_invalidate_unlock_shared(inode->i_mapping);
sb_end_pagefault(inode->i_sb);

5
include/linux/iomap.h
View file

@ -316,9 +316,8 @@ int iomap_zero_range(struct inode *inode, loff_t pos, loff_t len,
bool *did_zero, const struct iomap_ops *ops);
int iomap_truncate_page(struct inode *inode, loff_t pos, bool *did_zero,
const struct iomap_ops *ops);
vm_fault_t iomap_page_mkwrite(struct vm_fault *vmf,
const struct iomap_ops *ops);
vm_fault_t iomap_page_mkwrite(struct vm_fault *vmf, const struct iomap_ops *ops,
void *private);
typedef void (*iomap_punch_t)(struct inode *inode, loff_t offset, loff_t length,
struct iomap *iomap);
void iomap_write_delalloc_release(struct inode *inode, loff_t start_byte,