From: Christoph Hellwig <hch@lst.de>
To: linux-xfs@vger.kernel.org
Cc: linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org,
linux-mm@kvack.org
Subject: [PATCH 33/33] fs: remove __block_write_begin and iomap_to_bh
Date: Wed, 9 May 2018 09:48:30 +0200 [thread overview]
Message-ID: <20180509074830.16196-34-hch@lst.de> (raw)
In-Reply-To: <20180509074830.16196-1-hch@lst.de>
Now that the iomap buffered write code stopped using bufferheads these
aren't used anymore.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
fs/buffer.c | 76 ++++-----------------------------------------------
fs/internal.h | 2 --
2 files changed, 5 insertions(+), 73 deletions(-)
diff --git a/fs/buffer.c b/fs/buffer.c
index 71ea9a29e9d5..5cdcaa6230ed 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -22,7 +22,6 @@
#include <linux/sched/signal.h>
#include <linux/syscalls.h>
#include <linux/fs.h>
-#include <linux/iomap.h>
#include <linux/mm.h>
#include <linux/percpu.h>
#include <linux/slab.h>
@@ -1863,62 +1862,8 @@ void page_zero_new_buffers(struct page *page, unsigned from, unsigned to)
}
EXPORT_SYMBOL(page_zero_new_buffers);
-static void
-iomap_to_bh(struct inode *inode, sector_t block, struct buffer_head *bh,
- struct iomap *iomap)
-{
- loff_t offset = block << inode->i_blkbits;
-
- bh->b_bdev = iomap->bdev;
-
- /*
- * Block points to offset in file we need to map, iomap contains
- * the offset at which the map starts. If the map ends before the
- * current block, then do not map the buffer and let the caller
- * handle it.
- */
- BUG_ON(offset >= iomap->offset + iomap->length);
-
- switch (iomap->type) {
- case IOMAP_HOLE:
- /*
- * If the buffer is not up to date or beyond the current EOF,
- * we need to mark it as new to ensure sub-block zeroing is
- * executed if necessary.
- */
- if (!buffer_uptodate(bh) ||
- (offset >= i_size_read(inode)))
- set_buffer_new(bh);
- break;
- case IOMAP_DELALLOC:
- if (!buffer_uptodate(bh) ||
- (offset >= i_size_read(inode)))
- set_buffer_new(bh);
- set_buffer_uptodate(bh);
- set_buffer_mapped(bh);
- set_buffer_delay(bh);
- break;
- case IOMAP_UNWRITTEN:
- /*
- * For unwritten regions, we always need to ensure that
- * sub-block writes cause the regions in the block we are not
- * writing to are zeroed. Set the buffer as new to ensure this.
- */
- set_buffer_new(bh);
- set_buffer_unwritten(bh);
- /* FALLTHRU */
- case IOMAP_MAPPED:
- if (offset >= i_size_read(inode))
- set_buffer_new(bh);
- bh->b_blocknr = (iomap->addr + offset - iomap->offset) >>
- inode->i_blkbits;
- set_buffer_mapped(bh);
- break;
- }
-}
-
-int __block_write_begin_int(struct page *page, loff_t pos, unsigned len,
- get_block_t *get_block, struct iomap *iomap)
+int __block_write_begin(struct page *page, loff_t pos, unsigned len,
+ get_block_t *get_block)
{
unsigned from = pos & (PAGE_SIZE - 1);
unsigned to = from + len;
@@ -1954,14 +1899,9 @@ int __block_write_begin_int(struct page *page, loff_t pos, unsigned len,
clear_buffer_new(bh);
if (!buffer_mapped(bh)) {
WARN_ON(bh->b_size != blocksize);
- if (get_block) {
- err = get_block(inode, block, bh, 1);
- if (err)
- break;
- } else {
- iomap_to_bh(inode, block, bh, iomap);
- }
-
+ err = get_block(inode, block, bh, 1);
+ if (err)
+ break;
if (buffer_new(bh)) {
clean_bdev_bh_alias(bh);
if (PageUptodate(page)) {
@@ -2001,12 +1941,6 @@ int __block_write_begin_int(struct page *page, loff_t pos, unsigned len,
page_zero_new_buffers(page, from, to);
return err;
}
-
-int __block_write_begin(struct page *page, loff_t pos, unsigned len,
- get_block_t *get_block)
-{
- return __block_write_begin_int(page, pos, len, get_block, NULL);
-}
EXPORT_SYMBOL(__block_write_begin);
static int __block_commit_write(struct inode *inode, struct page *page,
diff --git a/fs/internal.h b/fs/internal.h
index b955232d3d49..47764f739075 100644
--- a/fs/internal.h
+++ b/fs/internal.h
@@ -41,8 +41,6 @@ static inline int __sync_blockdev(struct block_device *bdev, int wait)
* buffer.c
*/
extern void guard_bio_eod(int rw, struct bio *bio);
-extern int __block_write_begin_int(struct page *page, loff_t pos, unsigned len,
- get_block_t *get_block, struct iomap *iomap);
int __generic_write_end(struct inode *inode, loff_t pos, unsigned copied,
struct page *page);
--
2.17.0
next prev parent reply other threads:[~2018-05-09 7:48 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-09 7:47 stop using buffer heads in xfs and iomap Christoph Hellwig
2018-05-09 7:47 ` [PATCH 01/33] block: add a lower-level bio_add_page interface Christoph Hellwig
2018-05-09 15:12 ` Matthew Wilcox
2018-05-10 6:40 ` Christoph Hellwig
2018-05-10 21:49 ` Andreas Dilger
2018-05-11 6:29 ` Christoph Hellwig
2018-05-15 16:47 ` Jens Axboe
2018-05-10 8:52 ` Ming Lei
2018-05-11 6:24 ` Christoph Hellwig
2018-05-16 5:06 ` Ritesh Harjani
2018-05-16 18:05 ` Christoph Hellwig
2018-05-17 4:18 ` Ritesh Harjani
2018-05-09 7:47 ` [PATCH 02/33] fs: factor out a __generic_write_end helper Christoph Hellwig
2018-05-09 15:15 ` Matthew Wilcox
2018-05-10 6:40 ` Christoph Hellwig
2018-05-09 7:48 ` [PATCH 03/33] fs: move page_cache_seek_hole_data to iomap.c Christoph Hellwig
2018-05-09 7:48 ` [PATCH 04/33] fs: remove the buffer_unwritten check in page_seek_hole_data Christoph Hellwig
2018-05-17 11:33 ` Andreas Grünbacher
2018-05-09 7:48 ` [PATCH 05/33] fs: use ->is_partially_uptodate in page_cache_seek_hole_data Christoph Hellwig
2018-05-09 7:48 ` [PATCH 06/33] mm: give the 'ret' variable a better name __do_page_cache_readahead Christoph Hellwig
2018-05-09 15:45 ` Matthew Wilcox
2018-05-10 6:41 ` Christoph Hellwig
2018-05-09 7:48 ` [PATCH 07/33] mm: split ->readpages calls to avoid non-contiguous pages lists Christoph Hellwig
2018-05-09 15:46 ` Matthew Wilcox
2018-05-09 7:48 ` [PATCH 08/33] iomap: use __bio_add_page in iomap_dio_zero Christoph Hellwig
2018-05-09 7:48 ` [PATCH 09/33] iomap: add a iomap_sector helper Christoph Hellwig
2018-05-09 7:48 ` [PATCH 10/33] iomap: add an iomap-based bmap implementation Christoph Hellwig
2018-05-09 16:46 ` Darrick J. Wong
2018-05-10 6:42 ` Christoph Hellwig
2018-05-10 15:08 ` Darrick J. Wong
2018-05-11 6:25 ` Christoph Hellwig
2018-05-12 1:56 ` Darrick J. Wong
2018-05-09 7:48 ` [PATCH 11/33] iomap: add an iomap-based readpage and readpages implementation Christoph Hellwig
2018-05-10 1:17 ` Dave Chinner
2018-05-10 6:44 ` Christoph Hellwig
2018-05-09 7:48 ` [PATCH 12/33] xfs: use iomap_bmap Christoph Hellwig
2018-05-09 7:48 ` [PATCH 13/33] xfs: use iomap for blocksize == PAGE_SIZE readpage and readpages Christoph Hellwig
2018-05-09 7:48 ` [PATCH 14/33] xfs: simplify xfs_bmap_punch_delalloc_range Christoph Hellwig
2018-05-09 7:48 ` [PATCH 15/33] xfs: simplify xfs_aops_discard_page Christoph Hellwig
2018-05-09 7:48 ` [PATCH 16/33] xfs: move locking into xfs_bmap_punch_delalloc_range Christoph Hellwig
2018-05-09 7:48 ` [PATCH 17/33] xfs: make xfs_writepage_map extent map centric Christoph Hellwig
2018-05-09 7:48 ` [PATCH 18/33] xfs: remove the now unused XFS_BMAPI_IGSTATE flag Christoph Hellwig
2018-05-09 7:48 ` [PATCH 19/33] xfs: remove xfs_reflink_find_cow_mapping Christoph Hellwig
2018-05-09 7:48 ` [PATCH 20/33] xfs: remove xfs_reflink_trim_irec_to_next_cow Christoph Hellwig
2018-05-09 7:48 ` [PATCH 21/33] xfs: simplify xfs_map_blocks by using xfs_iext_lookup_extent directly Christoph Hellwig
2018-05-09 7:48 ` [PATCH 22/33] xfs: don't clear imap_valid for a non-uptodate buffers Christoph Hellwig
2018-05-09 7:48 ` [PATCH 23/33] xfs: remove the imap_valid flag Christoph Hellwig
2018-05-09 7:48 ` [PATCH 24/33] xfs: don't look at buffer heads in xfs_add_to_ioend Christoph Hellwig
2018-05-09 7:48 ` [PATCH 25/33] xfs: move all writeback buffer_head manipulation into xfs_map_at_offset Christoph Hellwig
2018-05-09 7:48 ` [PATCH 26/33] xfs: allow writeback on pages without buffer heads Christoph Hellwig
2018-05-09 7:48 ` [PATCH 27/33] xfs: remove xfs_start_page_writeback Christoph Hellwig
2018-05-09 7:48 ` [PATCH 28/33] xfs: refactor the tail of xfs_writepage_map Christoph Hellwig
2018-05-09 7:48 ` [PATCH 29/33] xfs: do not set the page uptodate in xfs_writepage_map Christoph Hellwig
2018-05-09 7:48 ` [PATCH 30/33] iomap: add initial support for writes without buffer heads Christoph Hellwig
2018-05-09 7:48 ` [PATCH 31/33] iomap: add support for sub-pagesize buffered I/O " Christoph Hellwig
2018-05-14 16:00 ` Goldwyn Rodrigues
2018-05-15 7:26 ` Christoph Hellwig
2018-05-15 13:47 ` Goldwyn Rodrigues
2018-05-16 5:46 ` Dave Chinner
2018-05-09 7:48 ` [PATCH 32/33] xfs: add support for sub-pagesize writeback without buffer_heads Christoph Hellwig
2018-05-09 7:48 ` Christoph Hellwig [this message]
2018-05-10 15:13 ` stop using buffer heads in xfs and iomap Darrick J. Wong
2018-05-11 6:22 ` Christoph Hellwig
2018-05-11 6:39 ` Darrick J. Wong
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