projects / linux-2.6-block.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: 9b4e675) | patch
btrfs: fiemap: preallocate ulists for btrfs_check_shared
authorDavid Sterba <dsterba@suse.com>
Wed, 15 May 2019 13:31:04 +0000 (15:31 +0200)
committerDavid Sterba <dsterba@suse.com>
Mon, 1 Jul 2019 11:34:53 +0000 (13:34 +0200)
commit5911c8fe05c54c9f74a6467650e6493e4808cd01
tree039d2c9ea71a7d7f74d7a1ba483e8bf989d8737atree | snapshot
parent9b4e675a9978800995f83af0ed90e890ca501f31commit | diff
btrfs: fiemap: preallocate ulists for btrfs_check_shared

btrfs_check_shared looks up parents of a given extent and uses ulists
for that. These are allocated and freed repeatedly. Preallocation in the
caller will avoid the overhead and also allow us to use the GFP_KERNEL
as it is happens before the extent locks are taken.

Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
fs/btrfs/backref.c diff | blob | blame | history
fs/btrfs/backref.h diff | blob | blame | history
fs/btrfs/extent_io.c diff | blob | blame | history
Linux 6.x block layer and io_uring tree(s)