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OpenCloudOS-Kernel/fs/gfs2
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Goldwyn Rodrigues c039b99792 iomap: use a srcmap for a read-modify-write I/O 
The srcmap is used to identify where the read is to be performed from.
It is passed to ->iomap_begin, which can fill it in if we need to read
data for partially written blocks from a different location than the
write target.  The srcmap is only supported for buffered writes so far.

Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
[hch: merged two patches, removed the IOMAP_F_COW flag, use iomap as
      srcmap if not set, adjust length down to srcmap end as well]
Signed-off-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>
Acked-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
 		2019-10-21 08:51:59 -07:00
..
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
acl.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
acl.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
aops.c gfs2: Minor PAGE_SIZE arithmetic cleanups 2019-09-04 20:22:06 +02:00
aops.h gfs2: mark stuffed_readpage static 2019-07-03 14:45:18 +02:00
bmap.c iomap: use a srcmap for a read-modify-write I/O 2019-10-21 08:51:59 -07:00
bmap.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
dentry.c gfs2: untangle the logic in gfs2_drevalidate 2019-09-03 09:42:41 +02:00
dir.c gfs2: Delete an unnecessary check before brelse() 2019-09-04 20:22:17 +02:00
dir.h gfs2: Delete an unnecessary check before brelse() 2019-09-04 20:22:17 +02:00
export.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
file.c iomap: Allow forcing of waiting for running DIO in iomap_dio_rw() 2019-10-15 08:43:42 -07:00
gfs2.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
glock.c gfs2: Use async glocks for rename 2019-09-04 20:22:17 +02:00
glock.h gfs2: Use async glocks for rename 2019-09-04 20:22:17 +02:00
glops.c gfs2: replace more printk with calls to fs_info and friends 2019-06-27 21:30:27 +02:00
glops.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
incore.h Merge branch 'work.mount3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-09-24 12:33:34 -07:00
inode.c gfs2: Use async glocks for rename 2019-09-04 20:22:17 +02:00
inode.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
lock_dlm.c gfs2: Fix recovery slot bumping 2019-09-03 09:42:41 +02:00
log.c gfs2: eliminate tr_num_revoke_rm 2019-06-27 21:03:53 +02:00
log.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
lops.c gfs2: dump fsid when dumping glock problems 2019-06-27 21:27:43 +02:00
lops.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
main.c SPDX update for 5.2-rc4 2019-06-08 12:52:42 -07:00
meta_io.c gfs2: Rename SDF_SHUTDOWN to SDF_WITHDRAWN 2019-06-27 21:26:35 +02:00
meta_io.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
ops_fstype.c Merge branch 'work.mount3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-09-24 12:33:34 -07:00
quota.c gfs2: Minor PAGE_SIZE arithmetic cleanups 2019-09-04 20:22:06 +02:00
quota.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
recovery.c gfs2: log which portion of the journal is replayed 2019-06-27 21:03:58 +02:00
recovery.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
rgrp.c gfs2: Fix possible fs name overflows 2019-09-03 09:42:41 +02:00
rgrp.h gfs2: dump fsid when dumping glock problems 2019-06-27 21:27:43 +02:00
super.c Merge branch 'work.mount3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-09-24 12:33:34 -07:00
super.h gfs2: Convert gfs2 to fs_context 2019-09-18 22:47:05 -04:00
sys.c Driver Core and debugfs changes for 5.3-rc1 2019-07-12 12:24:03 -07:00
sys.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
trace_gfs2.h gfs2: eliminate rs_inum and reduce the size of gfs2 inodes 2018-06-21 07:39:31 -05:00
trans.c gfs2: eliminate tr_num_revoke_rm 2019-06-27 21:03:53 +02:00
trans.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
util.c gfs2: Fix possible fs name overflows 2019-09-03 09:42:41 +02:00
util.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
xattr.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
xattr.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00