Commit 82cb1417 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Darrick J. Wong
Browse files

xfs: add support for sub-pagesize writeback without buffer_heads



Switch to using the iomap_page structure for checking sub-page uptodate
status and track sub-page I/O completion status, and remove large
quantities of boilerplate code working around buffer heads.
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarBrian Foster <bfoster@redhat.com>
Reviewed-by: default avatarDarrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: default avatarDarrick J. Wong <darrick.wong@oracle.com>
parent 9dc55f13
This diff is collapsed.
......@@ -12,7 +12,6 @@
#include <linux/mm.h>
#include <linux/fs.h>
#include <linux/dax.h>
#include <linux/buffer_head.h>
#include <linux/uio.h>
#include <linux/list_lru.h>
......
......@@ -1032,9 +1032,6 @@ xfs_file_iomap_begin(
if (XFS_FORCED_SHUTDOWN(mp))
return -EIO;
if (i_blocksize(inode) < PAGE_SIZE)
iomap->flags |= IOMAP_F_BUFFER_HEAD;
if (((flags & (IOMAP_WRITE | IOMAP_DIRECT)) == IOMAP_WRITE) &&
!IS_DAX(inode) && !xfs_get_extsz_hint(ip)) {
/* Reserve delalloc blocks for regular writeback. */
......
......@@ -1860,7 +1860,7 @@ MODULE_ALIAS_FS("xfs");
STATIC int __init
xfs_init_zones(void)
{
if (bioset_init(&xfs_ioend_bioset, 4 * MAX_BUF_PER_PAGE,
if (bioset_init(&xfs_ioend_bioset, 4 * (PAGE_SIZE / SECTOR_SIZE),
offsetof(struct xfs_ioend, io_inline_bio),
BIOSET_NEED_BVECS))
goto out;
......
......@@ -1153,33 +1153,23 @@ DECLARE_EVENT_CLASS(xfs_page_class,
__field(loff_t, size)
__field(unsigned long, offset)
__field(unsigned int, length)
__field(int, delalloc)
__field(int, unwritten)
),
TP_fast_assign(
int delalloc = -1, unwritten = -1;
if (page_has_buffers(page))
xfs_count_page_state(page, &delalloc, &unwritten);
__entry->dev = inode->i_sb->s_dev;
__entry->ino = XFS_I(inode)->i_ino;
__entry->pgoff = page_offset(page);
__entry->size = i_size_read(inode);
__entry->offset = off;
__entry->length = len;
__entry->delalloc = delalloc;
__entry->unwritten = unwritten;
),
TP_printk("dev %d:%d ino 0x%llx pgoff 0x%lx size 0x%llx offset %lx "
"length %x delalloc %d unwritten %d",
"length %x",
MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->ino,
__entry->pgoff,
__entry->size,
__entry->offset,
__entry->length,
__entry->delalloc,
__entry->unwritten)
__entry->length)
)
#define DEFINE_PAGE_EVENT(name) \
......@@ -1263,9 +1253,6 @@ DEFINE_EVENT(xfs_imap_class, name, \
TP_ARGS(ip, offset, count, type, irec))
DEFINE_IOMAP_EVENT(xfs_map_blocks_found);
DEFINE_IOMAP_EVENT(xfs_map_blocks_alloc);
DEFINE_IOMAP_EVENT(xfs_get_blocks_found);
DEFINE_IOMAP_EVENT(xfs_get_blocks_alloc);
DEFINE_IOMAP_EVENT(xfs_get_blocks_map_direct);
DEFINE_IOMAP_EVENT(xfs_iomap_alloc);
DEFINE_IOMAP_EVENT(xfs_iomap_found);
......@@ -1304,7 +1291,6 @@ DEFINE_EVENT(xfs_simple_io_class, name, \
TP_ARGS(ip, offset, count))
DEFINE_SIMPLE_IO_EVENT(xfs_delalloc_enospc);
DEFINE_SIMPLE_IO_EVENT(xfs_unwritten_convert);
DEFINE_SIMPLE_IO_EVENT(xfs_get_blocks_notfound);
DEFINE_SIMPLE_IO_EVENT(xfs_setfilesize);
DEFINE_SIMPLE_IO_EVENT(xfs_zero_eof);
DEFINE_SIMPLE_IO_EVENT(xfs_end_io_direct_write);
......
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