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627209fbcc
linux/fs/xfs/libxfs
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Brian Foster 627209fbcc xfs: create delalloc bmapi wrapper for full extent allocation 
The writeback delalloc conversion code is racy with respect to
changes in the currently cached file mapping. This stems from the
fact that the bmapi allocation code requires a file range to
allocate and the writeback conversion code assumes the range of the
currently cached mapping is still valid with respect to the fork. It
may not be valid, however, because the ilock is cycled (potentially
multiple times) between the time the cached mapping was populated
and the delalloc conversion occurs.

To facilitate a solution to this problem, create a new
xfs_bmapi_delalloc() wrapper to xfs_bmapi_write() that takes a file
(FSB) offset and attempts to allocate whatever delalloc extent backs
the offset. Use a new bmapi flag to cause xfs_bmapi_write() to set
the range based on the extent backing the bno parameter unless bno
lands in a hole. If bno does land in a hole, fall back to the
current behavior (which may result in an error or quietly skipping
holes in the specified range depending on other parameters). This
patch does not change behavior.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-02-11 16:07:01 -08:00
..
xfs_ag_resv.c xfs: pass transaction lock while setting up agresv on cyclic metadata 2018-07-29 22:37:08 -07:00
xfs_ag_resv.h xfs: pass transaction lock while setting up agresv on cyclic metadata 2018-07-29 22:37:08 -07:00
xfs_ag.c xfs: remove xfs_rmap_ag_owner and friends 2018-12-12 08:47:16 -08:00
xfs_ag.h xfs: factor the ag length extension code into libxfs 2018-05-15 18:12:51 -07:00
xfs_alloc_btree.c xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_alloc_btree.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_alloc.c xfs: remove xfs_rmap_ag_owner and friends 2018-12-12 08:47:16 -08:00
xfs_alloc.h xfs: const-ify xfs_owner_info arguments 2018-12-12 08:47:16 -08:00
xfs_attr_leaf.c xfs: fix overflow in xfs_attr3_leaf_verify 2018-11-06 07:50:50 -08:00
xfs_attr_leaf.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_attr_remote.c xfs: remove last of unnecessary xfs_defer_cancel() callers 2018-09-29 13:41:58 +10:00
xfs_attr_remote.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_attr_sf.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_attr.c xfs: check attribute name validity 2019-02-11 16:06:40 -08:00
xfs_attr.h xfs: check attribute name validity 2019-02-11 16:06:40 -08:00
xfs_bit.c xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_bit.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_bmap_btree.c xfs: pass transaction to xfs_defer_add() 2018-08-02 23:05:14 -07:00
xfs_bmap_btree.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_bmap.c xfs: create delalloc bmapi wrapper for full extent allocation 2019-02-11 16:07:01 -08:00
xfs_bmap.h xfs: create delalloc bmapi wrapper for full extent allocation 2019-02-11 16:07:01 -08:00
xfs_btree.c xfs: fix inverted return from xfs_btree_sblock_verify_crc 2018-12-04 08:50:49 -08:00
xfs_btree.h xfs: fold dfops into the transaction 2018-08-02 23:05:14 -07:00
xfs_cksum.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
xfs_da_btree.c xfs: check da node magic in _node_lookup_int 2018-08-01 07:42:43 -07:00
xfs_da_btree.h xfs: fold dfops into the transaction 2018-08-02 23:05:14 -07:00
xfs_da_format.c xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_da_format.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_defer.c xfs: streamline defer op type handling 2018-12-12 08:47:16 -08:00
xfs_defer.h xfs: streamline defer op type handling 2018-12-12 08:47:16 -08:00
xfs_dir2_block.c xfs: clean up MIN/MAX 2018-06-08 10:07:52 -07:00
xfs_dir2_data.c xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_dir2_leaf.c xfs: clean up MIN/MAX 2018-06-08 10:07:52 -07:00
xfs_dir2_node.c xfs: use swap macro in xfs_dir2_leafn_rebalance 2018-07-17 14:25:57 -07:00
xfs_dir2_priv.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_dir2_sf.c xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_dir2.c xfs: check directory name validity 2019-02-11 16:06:40 -08:00
xfs_dir2.h xfs: check directory name validity 2019-02-11 16:06:40 -08:00
xfs_dquot_buf.c xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_errortag.h xfs: force summary counter recalc at next mount 2018-07-23 09:08:01 -07:00
xfs_format.h xfs: move XFS_INODE_FORMAT_STR mappings to libxfs 2018-12-19 14:02:01 -08:00
xfs_fs.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_ialloc_btree.c xfs: remove xfs_rmap_ag_owner and friends 2018-12-12 08:47:16 -08:00
xfs_ialloc_btree.h xfs: pass transaction lock while setting up agresv on cyclic metadata 2018-07-29 22:37:08 -07:00
xfs_ialloc.c xfs: precalculate cluster alignment in inodes and blocks 2018-12-12 08:47:17 -08:00
xfs_ialloc.h xfs: remove dfops parameter from ifree call stack 2018-07-11 22:26:07 -07:00
xfs_iext_tree.c xfs: update fork seq counter on data fork changes 2019-02-11 16:07:00 -08:00
xfs_inode_buf.c xfs: validate inode di_forkoff 2018-09-29 13:50:13 +10:00
xfs_inode_buf.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_inode_fork.c xfs: remove the xfs_ifork_t typedef 2018-07-30 07:57:48 -07:00
xfs_inode_fork.h xfs: update fork seq counter on data fork changes 2019-02-11 16:07:00 -08:00
xfs_log_format.h xfs: refactor unmount record write 2018-07-23 09:08:01 -07:00
xfs_log_recover.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_log_rlimit.c xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_quota_defs.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_refcount_btree.c xfs: remove xfs_rmap_ag_owner and friends 2018-12-12 08:47:16 -08:00
xfs_refcount_btree.h xfs: pass transaction lock while setting up agresv on cyclic metadata 2018-07-29 22:37:08 -07:00
xfs_refcount.c xfs: pass transaction to xfs_defer_add() 2018-08-02 23:05:14 -07:00
xfs_refcount.h xfs: pass transaction to xfs_defer_add() 2018-08-02 23:05:14 -07:00
xfs_rmap_btree.c xfs: pass transaction lock while setting up agresv on cyclic metadata 2018-07-29 22:37:08 -07:00
xfs_rmap_btree.h xfs: pass transaction lock while setting up agresv on cyclic metadata 2018-07-29 22:37:08 -07:00
xfs_rmap.c xfs: remove xfs_rmap_ag_owner and friends 2018-12-12 08:47:16 -08:00
xfs_rmap.h xfs: remove xfs_rmap_ag_owner and friends 2018-12-12 08:47:16 -08:00
xfs_rtbitmap.c xfs: cache minimum realtime summary level 2018-12-12 08:47:17 -08:00
xfs_sb.c xfs: remove suport for filesystems without unwritten extent flag 2018-10-18 17:18:58 +11:00
xfs_sb.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_shared.h xfs: replace dop_low with transaction flag 2018-08-02 23:05:13 -07:00
xfs_symlink_remote.c xfs: zero length symlinks are not valid 2018-12-12 08:47:15 -08:00
xfs_trans_resv.c xfs: clean up MIN/MAX 2018-06-08 10:07:52 -07:00
xfs_trans_resv.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_trans_space.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_types.c xfs: scrub should flag dir/attr offsets that aren't mappable with xfs_dablk_t 2019-02-11 16:06:40 -08:00
xfs_types.h xfs: scrub should flag dir/attr offsets that aren't mappable with xfs_dablk_t 2019-02-11 16:06:40 -08:00