From: Christoph Hellwig <hch@lst.de>
To: linux-xfs@vger.kernel.org
Cc: "Darrick J . Wong" <darrick.wong@oracle.com>
Subject: [PATCH 03/11] xfs: remove the s_maxbytes checks in xfs_map_blocks
Date: Thu, 17 Jan 2019 17:36:28 +0100 [thread overview]
Message-ID: <20190117163636.23171-4-hch@lst.de> (raw)
In-Reply-To: <20190117163636.23171-1-hch@lst.de>
We already ensure all data fits into s_maxbytes in the write / fault
path. The only reason we have them here is that they were copy and
pasted from xfs_bmapi_read when we stopped using that function.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
---
fs/xfs/xfs_aops.c | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)
diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
index 8fec6fd4c632..5b6fab283316 100644
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -301,7 +301,8 @@ xfs_map_blocks(
struct xfs_inode *ip = XFS_I(inode);
struct xfs_mount *mp = ip->i_mount;
ssize_t count = i_blocksize(inode);
- xfs_fileoff_t offset_fsb = XFS_B_TO_FSBT(mp, offset), end_fsb;
+ 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;
struct xfs_bmbt_irec imap;
struct xfs_iext_cursor icur;
@@ -356,11 +357,6 @@ xfs_map_blocks(
xfs_ilock(ip, XFS_ILOCK_SHARED);
ASSERT(ip->i_d.di_format != XFS_DINODE_FMT_BTREE ||
(ip->i_df.if_flags & XFS_IFEXTENTS));
- ASSERT(offset <= mp->m_super->s_maxbytes);
-
- if (offset > mp->m_super->s_maxbytes - count)
- count = mp->m_super->s_maxbytes - offset;
- end_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)offset + count);
/*
* Check if this is offset is covered by a COW extents, and if yes use
--
2.20.1
next prev parent reply other threads:[~2019-01-17 16:36 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-17 16:36 COW improvements and always_cow support V4 Christoph Hellwig
2019-01-17 16:36 ` [PATCH 01/11] xfs: remove xfs_trim_extent_eof Christoph Hellwig
2019-01-17 16:36 ` [PATCH 02/11] xfs: remove the io_type field from the writeback context and ioend Christoph Hellwig
2019-01-17 16:36 ` Christoph Hellwig [this message]
2019-01-17 16:36 ` [PATCH 04/11] xfs: rework the truncate race handling in the writeback path Christoph Hellwig
2019-01-17 16:36 ` [PATCH 05/11] xfs: make xfs_bmbt_to_iomap more useful Christoph Hellwig
2019-01-17 16:36 ` [PATCH 06/11] xfs: don't use delalloc extents for COW on files with extsize hints Christoph Hellwig
2019-01-17 16:36 ` [PATCH 07/11] xfs: also truncate holes covered by COW blocks Christoph Hellwig
2019-01-17 16:36 ` [PATCH 08/11] xfs: merge COW handling into xfs_file_iomap_begin_delay Christoph Hellwig
2019-01-17 16:36 ` [PATCH 09/11] xfs: report IOMAP_F_SHARED from xfs_file_iomap_begin_delay Christoph Hellwig
2019-01-17 16:36 ` [PATCH 10/11] xfs: make COW fork unwritten extent conversions more robust Christoph Hellwig
2019-01-17 16:36 ` [PATCH 11/11] xfs: introduce an always_cow mode Christoph Hellwig
-- strict thread matches above, loose matches on Subject: below --
2019-01-31 7:55 make delalloc conversion more robust and clear Christoph Hellwig
2019-01-31 7:55 ` [PATCH 03/11] xfs: remove the s_maxbytes checks in xfs_map_blocks Christoph Hellwig
2019-01-31 18:10 ` Brian Foster
2018-12-03 22:24 COW improvements and always_cow support V3 Christoph Hellwig
2018-12-03 22:24 ` [PATCH 03/11] xfs: remove the s_maxbytes checks in xfs_map_blocks Christoph Hellwig
2018-12-18 22:31 ` Darrick J. Wong
2018-12-03 16:21 COW improvements and always_cow support V3 Christoph Hellwig
2018-12-03 16:21 ` [PATCH 03/11] xfs: remove the s_maxbytes checks in xfs_map_blocks Christoph Hellwig
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