linux/fs/ext4
Ojaswin Mujoo 3c6296046c ext4: Don't skip prefetching BLOCK_UNINIT groups
Currently, ext4_mb_prefetch() and ext4_mb_prefetch_fini() skip
BLOCK_UNINIT groups since fetching their bitmaps doesn't need disk IO.
As a consequence, we end not initializing the buddy structures and CR0/1
lists for these BGs, even though it can be done without any disk IO
overhead. Hence, don't skip such BGs during prefetch and prefetch_fini.

This improves the accuracy of CR0/1 allocation as earlier, we could have
essentially empty BLOCK_UNINIT groups being ignored by CR0/1 due to their buddy
not being initialized, leading to slower CR2 allocations. With this patch CR0/1
will be able to discover these groups as well, thus improving performance.

Signed-off-by: Ojaswin Mujoo <ojaswin@linux.ibm.com>
Reviewed-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/dc3130b8daf45ffe63d8a3c1edcf00eb8ba70e1f.1685449706.git.ojaswin@linux.ibm.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2023-06-26 19:34:56 -04:00
..
.kunitconfig ext4: add .kunitconfig fragment to enable ext4-specific tests 2021-02-11 23:16:30 -05:00
acl.c fs: port acl to mnt_idmap 2023-01-19 09:24:28 +01:00
acl.h fs: port ->set_acl() to pass mnt_idmap 2023-01-19 09:24:27 +01:00
balloc.c ext4: drop the call to ext4_error() from ext4_get_group_info() 2023-06-14 22:24:05 -04:00
bitmap.c ext4: remove useless conditional branch code 2023-04-19 23:39:08 -04:00
block_validity.c ext4: add ext4_sb_block_valid() refactored out of ext4_inode_block_valid() 2022-02-25 21:34:56 -05:00
crypto.c ext4: refactor and move ext4_ioctl_get_encryption_pwsalt() 2022-05-21 22:24:24 -04:00
dir.c ext4: fix spelling errors in comments 2022-05-11 15:19:06 -04:00
ext4_extents.h ext4: fix sparse warnings 2021-08-30 23:36:50 -04:00
ext4_jbd2.c ext4: split ext4_journal_start trace for debug 2022-12-01 10:46:54 -05:00
ext4_jbd2.h ext4: split ext4_journal_start trace for debug 2022-12-01 10:46:54 -05:00
ext4.h ext4: Add counter to track successful allocation of goal length 2023-06-26 19:34:56 -04:00
extents_status.c ext4: fix data races when using cached status extents 2023-05-13 18:05:04 -04:00
extents_status.h ext4: fix extent_status trace points 2020-01-25 02:03:03 -05:00
extents.c ext4: fix use-after-free read in ext4_find_extent for bigalloc + inline 2023-04-28 12:56:35 -04:00
fast_commit.c ext4: use ext4_fc_tl_mem in fast-commit replay path 2023-02-09 10:43:23 -05:00
fast_commit.h ext4: add missing validation of fast-commit record lengths 2022-12-08 21:49:24 -05:00
file.c fs: add FMODE_DIO_PARALLEL_WRITE flag 2023-04-03 07:14:20 -06:00
fsmap.c ext4: fix another off-by-one fsmap error on 1k block filesystems 2023-03-07 20:20:48 -05:00
fsmap.h ext4: fsmap: fix the block/inode bitmap comment 2021-06-24 09:48:29 -04:00
fsync.c ext4: fix fsync for non-directories 2023-05-30 15:33:57 -04:00
hash.c ext4: improve error handling from ext4_dirhash() 2023-05-13 18:05:05 -04:00
ialloc.c ext4: allow ext4_get_group_info() to fail 2023-05-13 18:02:46 -04:00
indirect.c ext4: fix error code return to user-space in ext4_get_branch() 2022-12-08 21:49:24 -05:00
inline.c ext4: Make ext4_write_inline_data_end() use folio 2023-06-15 00:02:10 -04:00
inode-test.c fs: ext4: Modify inode-test.c to use KUnit parameterized testing feature 2020-12-02 16:07:25 -07:00
inode.c ext4: Make ext4_write_inline_data_end() use folio 2023-06-15 00:02:10 -04:00
ioctl.c Bug fixes and regressions for ext4, the most serious of which is a 2023-03-12 08:55:55 -07:00
Kconfig ext: EXT4_KUNIT_TESTS should depend on EXT4_FS instead of selecting it 2021-02-11 23:12:59 -05:00
Makefile ext4: move ext4 crypto code to its own file crypto.c 2022-05-21 22:24:24 -04:00
mballoc.c ext4: Don't skip prefetching BLOCK_UNINIT groups 2023-06-26 19:34:56 -04:00
mballoc.h ext4: Add per CR extent scanned counter 2023-06-26 19:34:56 -04:00
migrate.c ext4: avoid deadlock in fs reclaim with page writeback 2023-05-13 18:05:04 -04:00
mmp.c ext4: fix lockdep warning when enabling MMP 2023-05-07 21:11:18 -04:00
move_extent.c - Nick Piggin's "shoot lazy tlbs" series, to improve the peformance of 2023-04-27 19:42:02 -07:00
namei.c ext4: improve error handling from ext4_dirhash() 2023-05-13 18:05:05 -04:00
orphan.c ext4: remove trailing newline from ext4_msg() message 2022-12-08 21:49:23 -05:00
page-io.c ext4: remove unneeded check of nr_to_submit 2023-04-19 23:38:33 -04:00
readpage.c ext4: Call fsverity_verify_folio() 2023-06-15 00:02:10 -04:00
resize.c ext4: remove unused group parameter in ext4_block_bitmap_csum_set 2023-03-23 23:00:08 -04:00
super.c ext4: treat stripe in block unit 2023-06-15 00:02:10 -04:00
symlink.c fs: port ->getattr() to pass mnt_idmap 2023-01-19 09:24:25 +01:00
sysfs.c ext4: Remove the logic to trim inode PAs 2023-04-06 01:13:13 -04:00
truncate.h ext4: Convert to use mapping->invalidate_lock 2021-07-13 14:29:00 +02:00
verity.c - Nick Piggin's "shoot lazy tlbs" series, to improve the peformance of 2023-04-27 19:42:02 -07:00
xattr_hurd.c fs: port xattr to mnt_idmap 2023-01-19 09:24:28 +01:00
xattr_security.c fs: port xattr to mnt_idmap 2023-01-19 09:24:28 +01:00
xattr_trusted.c fs: port xattr to mnt_idmap 2023-01-19 09:24:28 +01:00
xattr_user.c fs: port xattr to mnt_idmap 2023-01-19 09:24:28 +01:00
xattr.c ext4: only check dquot_initialize_needed() when debugging 2023-06-08 10:06:40 -04:00
xattr.h ext4: remove EA inode entry from mbcache on inode eviction 2022-08-02 23:56:25 -04:00