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author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-11-08 19:23:07 +0100 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-11-08 19:23:07 +0100 |
commit | 9dbc1c03eeb534b82647cccb059aca0685d449a7 (patch) | |
tree | 1ccaaa5e1e0c4172befac6e161b9e4d9841ca3c5 | |
parent | Merge branch 'hch' (patches from Christoph) (diff) | |
parent | xfs: only flush the unshared range in xfs_reflink_unshare (diff) | |
download | linux-9dbc1c03eeb534b82647cccb059aca0685d449a7.tar.xz linux-9dbc1c03eeb534b82647cccb059aca0685d449a7.zip |
Merge tag 'xfs-5.10-fixes-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs fixes from Darrick Wong:
- Fix an uninitialized struct problem
- Fix an iomap problem zeroing unwritten EOF blocks
- Fix some clumsy error handling when writeback fails on filesystems
with blocksize < pagesize
- Fix a retry loop not resetting loop variables properly
- Fix scrub flagging rtinherit inodes on a non-rt fs, since the kernel
actually does permit that combination
- Fix excessive page cache flushing when unsharing part of a file
* tag 'xfs-5.10-fixes-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: only flush the unshared range in xfs_reflink_unshare
xfs: fix scrub flagging rtinherit even if there is no rt device
xfs: fix missing CoW blocks writeback conversion retry
iomap: clean up writeback state logic on writepage error
iomap: support partial page discard on writeback block mapping failure
xfs: flush new eof page on truncate to avoid post-eof corruption
xfs: set xefi_discard when creating a deferred agfl free log intent item
-rw-r--r-- | fs/iomap/buffered-io.c | 30 | ||||
-rw-r--r-- | fs/xfs/libxfs/xfs_alloc.c | 1 | ||||
-rw-r--r-- | fs/xfs/libxfs/xfs_bmap.h | 2 | ||||
-rw-r--r-- | fs/xfs/scrub/inode.c | 3 | ||||
-rw-r--r-- | fs/xfs/xfs_aops.c | 20 | ||||
-rw-r--r-- | fs/xfs/xfs_iops.c | 10 | ||||
-rw-r--r-- | fs/xfs/xfs_reflink.c | 3 | ||||
-rw-r--r-- | include/linux/iomap.h | 2 |
8 files changed, 38 insertions, 33 deletions
diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c index 8180061b9e16..10cc7979ce38 100644 --- a/fs/iomap/buffered-io.c +++ b/fs/iomap/buffered-io.c @@ -1374,6 +1374,7 @@ iomap_writepage_map(struct iomap_writepage_ctx *wpc, WARN_ON_ONCE(!wpc->ioend && !list_empty(&submit_list)); WARN_ON_ONCE(!PageLocked(page)); WARN_ON_ONCE(PageWriteback(page)); + WARN_ON_ONCE(PageDirty(page)); /* * We cannot cancel the ioend directly here on error. We may have @@ -1382,33 +1383,22 @@ iomap_writepage_map(struct iomap_writepage_ctx *wpc, * appropriately. */ if (unlikely(error)) { + /* + * Let the filesystem know what portion of the current page + * failed to map. If the page wasn't been added to ioend, it + * won't be affected by I/O completion and we must unlock it + * now. + */ + if (wpc->ops->discard_page) + wpc->ops->discard_page(page, file_offset); if (!count) { - /* - * If the current page hasn't been added to ioend, it - * won't be affected by I/O completions and we must - * discard and unlock it right here. - */ - if (wpc->ops->discard_page) - wpc->ops->discard_page(page); ClearPageUptodate(page); unlock_page(page); goto done; } - - /* - * If the page was not fully cleaned, we need to ensure that the - * higher layers come back to it correctly. That means we need - * to keep the page dirty, and for WB_SYNC_ALL writeback we need - * to ensure the PAGECACHE_TAG_TOWRITE index mark is not removed - * so another attempt to write this page in this writeback sweep - * will be made. - */ - set_page_writeback_keepwrite(page); - } else { - clear_page_dirty_for_io(page); - set_page_writeback(page); } + set_page_writeback(page); unlock_page(page); /* diff --git a/fs/xfs/libxfs/xfs_alloc.c b/fs/xfs/libxfs/xfs_alloc.c index 852b536551b5..15640015be9d 100644 --- a/fs/xfs/libxfs/xfs_alloc.c +++ b/fs/xfs/libxfs/xfs_alloc.c @@ -2467,6 +2467,7 @@ xfs_defer_agfl_block( new->xefi_startblock = XFS_AGB_TO_FSB(mp, agno, agbno); new->xefi_blockcount = 1; new->xefi_oinfo = *oinfo; + new->xefi_skip_discard = false; trace_xfs_agfl_free_defer(mp, agno, 0, agbno, 1); diff --git a/fs/xfs/libxfs/xfs_bmap.h b/fs/xfs/libxfs/xfs_bmap.h index e1bd484e5548..6747e97a7949 100644 --- a/fs/xfs/libxfs/xfs_bmap.h +++ b/fs/xfs/libxfs/xfs_bmap.h @@ -52,9 +52,9 @@ struct xfs_extent_free_item { xfs_fsblock_t xefi_startblock;/* starting fs block number */ xfs_extlen_t xefi_blockcount;/* number of blocks in extent */ + bool xefi_skip_discard; struct list_head xefi_list; struct xfs_owner_info xefi_oinfo; /* extent owner */ - bool xefi_skip_discard; }; #define XFS_BMAP_MAX_NMAP 4 diff --git a/fs/xfs/scrub/inode.c b/fs/xfs/scrub/inode.c index 3aa85b64de36..bb25ff1b770d 100644 --- a/fs/xfs/scrub/inode.c +++ b/fs/xfs/scrub/inode.c @@ -121,8 +121,7 @@ xchk_inode_flags( goto bad; /* rt flags require rt device */ - if ((flags & (XFS_DIFLAG_REALTIME | XFS_DIFLAG_RTINHERIT)) && - !mp->m_rtdev_targp) + if ((flags & XFS_DIFLAG_REALTIME) && !mp->m_rtdev_targp) goto bad; /* new rt bitmap flag only valid for rbmino */ diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c index 55d126d4e096..4304c6416fbb 100644 --- a/fs/xfs/xfs_aops.c +++ b/fs/xfs/xfs_aops.c @@ -346,8 +346,8 @@ xfs_map_blocks( ssize_t count = i_blocksize(inode); xfs_fileoff_t offset_fsb = XFS_B_TO_FSBT(mp, offset); xfs_fileoff_t end_fsb = XFS_B_TO_FSB(mp, offset + count); - xfs_fileoff_t cow_fsb = NULLFILEOFF; - int whichfork = XFS_DATA_FORK; + xfs_fileoff_t cow_fsb; + int whichfork; struct xfs_bmbt_irec imap; struct xfs_iext_cursor icur; int retries = 0; @@ -381,6 +381,8 @@ xfs_map_blocks( * landed in a hole and we skip the block. */ retry: + cow_fsb = NULLFILEOFF; + whichfork = XFS_DATA_FORK; xfs_ilock(ip, XFS_ILOCK_SHARED); ASSERT(ip->i_df.if_format != XFS_DINODE_FMT_BTREE || (ip->i_df.if_flags & XFS_IFEXTENTS)); @@ -527,13 +529,15 @@ xfs_prepare_ioend( */ static void xfs_discard_page( - struct page *page) + struct page *page, + loff_t fileoff) { struct inode *inode = page->mapping->host; struct xfs_inode *ip = XFS_I(inode); struct xfs_mount *mp = ip->i_mount; - loff_t offset = page_offset(page); - xfs_fileoff_t start_fsb = XFS_B_TO_FSBT(mp, offset); + unsigned int pageoff = offset_in_page(fileoff); + xfs_fileoff_t start_fsb = XFS_B_TO_FSBT(mp, fileoff); + xfs_fileoff_t pageoff_fsb = XFS_B_TO_FSBT(mp, pageoff); int error; if (XFS_FORCED_SHUTDOWN(mp)) @@ -541,14 +545,14 @@ xfs_discard_page( xfs_alert_ratelimited(mp, "page discard on page "PTR_FMT", inode 0x%llx, offset %llu.", - page, ip->i_ino, offset); + page, ip->i_ino, fileoff); error = xfs_bmap_punch_delalloc_range(ip, start_fsb, - i_blocks_per_page(inode, page)); + i_blocks_per_page(inode, page) - pageoff_fsb); if (error && !XFS_FORCED_SHUTDOWN(mp)) xfs_alert(mp, "page discard unable to remove delalloc mapping."); out_invalidate: - iomap_invalidatepage(page, 0, PAGE_SIZE); + iomap_invalidatepage(page, pageoff, PAGE_SIZE - pageoff); } static const struct iomap_writeback_ops xfs_writeback_ops = { diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c index 5e165456da68..1414ab79eacf 100644 --- a/fs/xfs/xfs_iops.c +++ b/fs/xfs/xfs_iops.c @@ -911,6 +911,16 @@ xfs_setattr_size( error = iomap_zero_range(inode, oldsize, newsize - oldsize, &did_zeroing, &xfs_buffered_write_iomap_ops); } else { + /* + * iomap won't detect a dirty page over an unwritten block (or a + * cow block over a hole) and subsequently skips zeroing the + * newly post-EOF portion of the page. Flush the new EOF to + * convert the block before the pagecache truncate. + */ + error = filemap_write_and_wait_range(inode->i_mapping, newsize, + newsize); + if (error) + return error; error = iomap_truncate_page(inode, newsize, &did_zeroing, &xfs_buffered_write_iomap_ops); } diff --git a/fs/xfs/xfs_reflink.c b/fs/xfs/xfs_reflink.c index 16098dc42add..6fa05fb78189 100644 --- a/fs/xfs/xfs_reflink.c +++ b/fs/xfs/xfs_reflink.c @@ -1502,7 +1502,8 @@ xfs_reflink_unshare( &xfs_buffered_write_iomap_ops); if (error) goto out; - error = filemap_write_and_wait(inode->i_mapping); + + error = filemap_write_and_wait_range(inode->i_mapping, offset, len); if (error) goto out; diff --git a/include/linux/iomap.h b/include/linux/iomap.h index 172b3397a1a3..5bd3cac4df9c 100644 --- a/include/linux/iomap.h +++ b/include/linux/iomap.h @@ -221,7 +221,7 @@ struct iomap_writeback_ops { * Optional, allows the file system to discard state on a page where * we failed to submit any I/O. */ - void (*discard_page)(struct page *page); + void (*discard_page)(struct page *page, loff_t fileoff); }; struct iomap_writepage_ctx { |