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linux/fs/btrfs
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Filipe Manana 4f208dcc6b btrfs: avoid blocking when allocating context for nowait dio read/write 
When doing a NOWAIT direct IO read/write, we allocate a context object
(struct btrfs_dio_data) with GFP_NOFS, which can result in blocking
waiting for memory allocation (GFP_NOFS is __GFP_RECLAIM | __GFP_IO).
This is undesirable for the NOWAIT semantics, so do the allocation with
GFP_NOWAIT if we are serving a NOWAIT request and if the allocation fails
return -EAGAIN, so that the caller can fallback to a blocking context and
retry with a non-blocking write.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2022-05-16 17:03:10 +02:00
..
tests
btrfs: assert we have a write lock when removing and replacing extent maps
2022-03-14 13:13:50 +01:00
acl.c
btrfs: reserve correct number of items for inode creation
2022-05-16 17:03:08 +02:00
async-thread.c
btrfs: fix memory ordering between normal and ordered work functions
2021-11-16 16:50:23 +01:00
async-thread.h
Btrfs: fix crash during unmount due to race with delayed inode workers
2020-03-23 17:01:51 +01:00
backref.c
btrfs: unify the error handling pattern for read_tree_block()
2022-03-14 13:13:53 +01:00
backref.h
btrfs: remove ignore_offset argument from btrfs_find_all_roots()
2021-08-23 13:19:01 +02:00
block-group.c
btrfs: use btrfs_for_each_slot in find_first_block_group
2022-05-16 17:03:07 +02:00
block-group.h
btrfs: zoned: activate block group only for extent allocation
2022-04-06 00:50:41 +02:00
block-rsv.c
btrfs: reserve extra space for the free space tree
2022-01-07 14:18:25 +01:00
block-rsv.h
btrfs: init root block_rsv at init root time
2022-01-03 15:09:48 +01:00
btrfs_inode.h
btrfs: export a helper for compression hard check
2022-04-27 22:15:40 +02:00
check-integrity.c
block: remove genhd.h
2022-02-02 07:49:59 -07:00
check-integrity.h
btrfs: remove btrfsic_submit_bh()
2020-03-23 17:01:39 +01:00
compression.c
btrfs: fix btrfs_submit_compressed_write cgroup attribution
2022-04-06 00:50:51 +02:00
compression.h
btrfs: track compressed bio errors as blk_status_t
2022-03-14 13:13:51 +01:00
ctree.c
btrfs: tree-checker: check extent buffer owner against owner rootid
2022-05-16 17:03:09 +02:00
ctree.h
btrfs: stop allocating a path when checking if cross reference exists
2022-05-16 17:03:10 +02:00
delalloc-space.c
btrfs: support different disk extent size for delalloc
2022-03-14 13:13:51 +01:00
delalloc-space.h
btrfs: make btrfs_delalloc_reserve_space take btrfs_inode
2020-07-27 12:55:36 +02:00
delayed-inode.c
btrfs: add an inode-item.h
2022-01-07 14:18:23 +01:00
delayed-inode.h
btrfs: make btrfs_delayed_update_inode take btrfs_inode
2020-12-08 15:54:10 +01:00
delayed-ref.c
btrfs: reserve extra space for the free space tree
2022-01-07 14:18:25 +01:00
delayed-ref.h
btrfs: make btrfs_ref::real_root optional
2021-10-26 19:08:06 +02:00
dev-replace.c
btrfs: use a local variable for fs_devices pointer in btrfs_dev_replace_finishing
2022-05-16 17:03:08 +02:00
dev-replace.h
btrfs: zoned: mark block groups to copy for device-replace
2021-02-09 02:46:07 +01:00
dir-item.c
btrfs: use btrfs_for_each_slot in btrfs_search_dir_index_item
2022-05-16 17:03:07 +02:00
discard.c
btrfs: fix typos in comments
2021-06-22 14:11:57 +02:00
discard.h
btrfs: cleanup btrfs_discard_update_discardable usage
2020-12-08 15:54:02 +01:00
disk-io.c
btrfs: tree-checker: check extent buffer owner against owner rootid
2022-05-16 17:03:09 +02:00
disk-io.h
btrfs: remove trivial wrapper btrfs_read_buffer()
2022-05-16 17:03:07 +02:00
export.c
btrfs: locking: rip out path->leave_spinning
2020-12-08 15:54:02 +01:00
export.h
btrfs: export helpers for subvolume name/id resolution
2020-03-23 17:01:42 +01:00
extent_io.c
btrfs: warn when extent buffer leak test fails
2022-05-16 17:03:08 +02:00
extent_io.h
btrfs: fix qgroup reserve overflow the qgroup limit
2022-03-23 23:34:15 +01:00
extent_map.c
btrfs: assert we have a write lock when removing and replacing extent maps
2022-03-14 13:13:50 +01:00
extent_map.h
btrfs: defrag: don't use merged extent map for their generation check
2022-02-23 17:43:13 +01:00
extent-io-tree.h
btrfs: Convert from invalidatepage to invalidate_folio
2022-03-15 08:23:29 -04:00
extent-tree.c
btrfs: stop allocating a path when checking if cross reference exists
2022-05-16 17:03:10 +02:00
file-item.c
btrfs: handle csum lookup errors properly on reads
2022-03-14 13:13:51 +01:00
file.c
btrfs: avoid double nocow check when doing nowait dio writes
2022-05-16 17:03:10 +02:00
free-space-cache.c
btrfs: add inode to truncate control
2022-01-07 14:18:24 +01:00
free-space-cache.h
btrfs: change name and type of private member of btrfs_free_space_ctl
2022-01-03 15:09:50 +01:00
free-space-tree.c
btrfs: add support for multiple global roots
2022-03-14 13:13:49 +01:00
free-space-tree.h
btrfs: rename btrfs_block_group_cache
2019-11-18 17:51:51 +01:00
inode-item.c
btrfs: make should_throttle loop local in btrfs_truncate_inode_items
2022-01-07 14:18:25 +01:00
inode-item.h
btrfs: add inode to truncate control
2022-01-07 14:18:24 +01:00
inode.c
btrfs: avoid blocking when allocating context for nowait dio read/write
2022-05-16 17:03:10 +02:00
ioctl.c
btrfs: move common inode creation code into btrfs_create_new_inode()
2022-05-16 17:03:08 +02:00
Kconfig
btrfs: use generic Kconfig option for 256kB page size limit
2022-01-20 08:52:55 +02:00
locking.c
btrfs: fix typos in comments
2021-06-22 14:11:57 +02:00
locking.h
btrfs: assert that extent buffers are write locked instead of only locked
2021-10-26 19:08:02 +02:00
lzo.c
btrfs: add lzo workspace buffer length constants
2022-03-14 13:13:50 +01:00
Makefile
Kbuild: add -Wno-shift-negative-value where -Wextra is used
2022-03-13 17:30:31 +09:00
misc.h
btrfs: use correct header for div_u64 in misc.h
2021-09-07 14:29:50 +02:00
ordered-data.c
btrfs: add BTRFS_IOC_ENCODED_WRITE
2022-03-14 13:13:51 +01:00
ordered-data.h
btrfs: add BTRFS_IOC_ENCODED_WRITE
2022-03-14 13:13:51 +01:00
orphan.c
…
print-tree.c
btrfs: unify the error handling pattern for read_tree_block()
2022-03-14 13:13:53 +01:00
print-tree.h
btrfs: print the actual offset in btrfs_root_name
2021-01-07 17:25:05 +01:00
props.c
btrfs: move common inode creation code into btrfs_create_new_inode()
2022-05-16 17:03:08 +02:00
props.h
btrfs: move common inode creation code into btrfs_create_new_inode()
2022-05-16 17:03:08 +02:00
qgroup.c
btrfs: remove trivial wrapper btrfs_read_buffer()
2022-05-16 17:03:07 +02:00
qgroup.h
btrfs: fix lock inversion problem when doing qgroup extent tracing
2021-07-22 15:50:07 +02:00
raid56.c
btrfs: remove btrfs_raid_bio::fs_info member
2021-10-26 19:08:03 +02:00
raid56.h
btrfs: remove btrfs_raid_bio::fs_info member
2021-10-26 19:08:03 +02:00
rcu-string.h
btrfs: rcu-string: Replace zero-length array with flexible-array member
2020-03-23 17:01:53 +01:00
ref-verify.c
btrfs: stop accessing ->extent_root directly
2022-01-03 15:09:49 +01:00
ref-verify.h
btrfs: ref-verify: Use btrfs_ref to refactor btrfs_ref_tree_mod()
2019-04-29 19:02:49 +02:00
reflink.c
btrfs: add and use helper to assert an inode range is clean
2022-05-16 17:03:09 +02:00
reflink.h
Btrfs: move all reflink implementation code into its own file
2020-03-23 17:01:54 +01:00
relocation.c
btrfs: unify the error handling pattern for read_tree_block()
2022-03-14 13:13:53 +01:00
root-tree.c
btrfs: do not start relocation until in progress drops are done
2022-03-02 16:52:39 +01:00
scrub.c
btrfs: scrub: rename scrub_bio::pagev and related members
2022-05-16 17:03:07 +02:00
send.c
btrfs: use btrfs_for_each_slot in btrfs_unlink_all_paths
2022-05-16 17:03:08 +02:00
send.h
btrfs: reuse existing inode from btrfs_ioctl
2022-03-14 13:13:46 +01:00
space-info.c
btrfs: add lockdep_assert_held to need_preemptive_reclaim
2022-03-14 13:13:53 +01:00
space-info.h
btrfs: change root to fs_info for btrfs_reserve_metadata_bytes
2022-01-03 15:09:45 +01:00
struct-funcs.c
btrfs: add special case to setget helpers for 64k pages
2021-08-23 13:18:58 +02:00
subpage.c
btrfs: subpage: fix a wrong check on subpage->writers
2022-03-02 16:51:39 +01:00
subpage.h
btrfs: rework page locking in __extent_writepage()
2021-10-26 19:08:05 +02:00
super.c
btrfs: add messages to printk index
2022-05-16 17:03:09 +02:00
sysfs.c
btrfs: sysfs: export the balance paused state of exclusive operation
2022-05-05 21:05:56 +02:00
sysfs.h
btrfs: split and refactor btrfs_sysfs_remove_devices_dir
2020-10-07 12:12:21 +02:00
transaction.c
btrfs: pass btrfs_fs_info for deleting snapshots and cleaner
2022-03-14 13:13:52 +01:00
transaction.h
btrfs: pass btrfs_fs_info for deleting snapshots and cleaner
2022-03-14 13:13:52 +01:00
tree-checker.c
btrfs: tree-checker: check extent buffer owner against owner rootid
2022-05-16 17:03:09 +02:00
tree-checker.h
btrfs: tree-checker: check extent buffer owner against owner rootid
2022-05-16 17:03:09 +02:00
tree-defrag.c
btrfs: remove unnecessary extent root check in btrfs_defrag_leaves
2022-01-03 15:09:48 +01:00
tree-log.c
btrfs: remove trivial wrapper btrfs_read_buffer()
2022-05-16 17:03:07 +02:00
tree-log.h
btrfs: avoid inode logging during rename and link when possible
2022-03-14 13:13:48 +01:00
tree-mod-log.c
btrfs: fix race when picking most recent mod log operation for an old root
2021-04-20 19:27:17 +02:00
tree-mod-log.h
btrfs: add and use helper to get lowest sequence number for the tree mod log
2021-04-19 17:25:17 +02:00
ulist.c
…
ulist.h
…
uuid-tree.c
btrfs: drop the _nr from the item helpers
2022-01-03 15:09:43 +01:00
verity.c
btrfs: drop the _nr from the item helpers
2022-01-03 15:09:43 +01:00
volumes.c
btrfs: use btrfs_for_each_slot in btrfs_read_chunk_tree
2022-05-16 17:03:08 +02:00
volumes.h
btrfs: fix direct I/O read repair for split bios
2022-04-19 15:44:56 +02:00
xattr.c
btrfs: use btrfs_for_each_slot in btrfs_listxattr
2022-05-16 17:03:08 +02:00
xattr.h
…
zlib.c
Revert "btrfs: compression: drop kmap/kunmap from zlib"
2021-10-29 13:03:05 +02:00
zoned.c
btrfs: zoned: activate block group properly on unlimited active zone device
2022-05-05 21:05:56 +02:00
zoned.h
btrfs: zoned: use dedicated lock for data relocation
2022-04-21 16:06:24 +02:00
zstd.c
lib: zstd: Add kernel-specific API
2021-11-08 16:55:21 -08:00