shodanshok bbe8512a93 Ignore zfs_arc_shrinker_limit in direct reclaim mode ... zfs_arc_shrinker_limit (default: 10000) avoids ARC collapse due to excessive memory reclaim. However, when the kernel is in direct reclaim mode (ie: low on memory), limiting ARC reclaim increases OOM risk. This is especially true on system without (or with inadequate) swap. This patch ignores zfs_arc_shrinker_limit when the kernel is in direct reclaim mode, avoiding most OOM. It also restores "echo 3 > /proc/sys/vm/drop_caches" ability to correctly drop (almost) all ARC. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Adam Moss <c@yotes.com> Signed-off-by: Gionatan Danti <g.danti@assyoma.it> Closes #16313		2024-08-21 10:00:33 -07:00
..
abd_os.c	Linux: Report reclaimable memory to kernel as such (#16385)	2024-07-30 11:40:47 -07:00
arc_os.c	Ignore zfs_arc_shrinker_limit in direct reclaim mode	2024-08-21 10:00:33 -07:00
mmp_os.c	Cleanup: 64-bit kernel module parameters should use fixed width types	2022-10-13 10:03:29 -07:00
policy.c	Linux 6.3 compat: idmapped mount API changes	2023-04-10 14:15:36 -07:00
qat_compress.c	Intel QAT 1.7 compatibility	2023-09-07 14:38:17 -07:00
qat_crypt.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
qat.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
spa_misc_os.c	Selectable block allocators	2023-09-01 18:00:30 -07:00
trace.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
vdev_disk.c	Linux 5.16: use bdev_nr_bytes() to get device capacity	2024-07-15 17:10:06 -07:00
vdev_file.c	zio: rename ZIO_TYPE_IOCTL to ZIO_TYPE_FLUSH	2024-04-11 17:17:23 -07:00
vdev_label_os.c	RAID-Z expansion feature	2023-11-08 10:19:41 -08:00
zfs_acl.c	Fixed parameter passing error when calling zfs_acl_chmod	2024-02-26 11:41:44 -08:00
zfs_ctldir.c	Linux 6.7 compat: use inode atime/mtime accessors	2023-12-20 11:47:40 -08:00
zfs_debug.c	zdb/ztest: send dbgmsg output to stderr	2024-05-14 09:49:00 -07:00
zfs_dir.c	Linux 6.3 compat: idmapped mount API changes	2023-04-10 14:15:36 -07:00
zfs_file_os.c	Cleanup: Remove branches that always evaluate the same way	2022-11-03 10:47:48 -07:00
zfs_ioctl_os.c	Linux 6.3 compat: idmapped mount API changes	2023-04-10 14:15:36 -07:00
zfs_racct.c	module: zfs: fix unused, remove argsused	2021-12-23 09:42:47 -08:00
zfs_sysfs.c	Introduce kmem_scnprintf()	2022-10-29 13:05:11 -07:00
zfs_uio.c	Use kmap_local_page instead of kmap_atomic (#16329)	2024-07-16 17:27:29 -07:00
zfs_vfsops.c	Linux: Make zfs_prune() fair on NUMA systems	2024-08-08 15:33:36 -07:00
zfs_vnops_os.c	Fix projid accounting for xattr objects	2024-08-14 17:59:19 -07:00
zfs_znode.c	Linux: Report reclaimable memory to kernel as such (#16385)	2024-07-30 11:40:47 -07:00
zio_crypt.c	ZIL: Assert record sizes in different places	2023-11-28 13:35:14 -08:00
zpl_ctldir.c	Linux 6.6 compat: generic_fillattr has a new u32 request_mask added at arg2	2023-09-21 18:38:40 -07:00
zpl_export.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
zpl_file_range.c	Linux 6.8 compat: use splice_copy_file_range() for fallback	2024-03-20 16:46:15 -07:00
zpl_file.c	Fix corruption caused by mmap flushing problems	2024-03-25 14:56:49 -07:00
zpl_inode.c	Linux 6.7 compat: use inode atime/mtime accessors	2023-12-20 11:47:40 -08:00
zpl_super.c	Skip ro check for snaps when multi-mount	2024-08-19 09:42:17 -07:00
zpl_xattr.c	Linux 6.6 compat: use inode_get/set_ctime*(...)	2023-09-21 18:38:31 -07:00
zvol_os.c	linux/zvol_os.c: cleanup limits for non-blk mq case	2024-08-20 17:16:08 -07:00