Luis Chamberlain 2c6efe9cf2 shmem: add support to ignore swap ... In doing experimentations with shmem having the option to avoid swap becomes a useful mechanism. One of the *raves* about brd over shmem is you can avoid swap, but that's not really a good reason to use brd if we can instead use shmem. Using brd has its own good reasons to exist, but just because "tmpfs" doesn't let you do that is not a great reason to avoid it if we can easily add support for it. I don't add support for reconfiguring incompatible options, but if we really wanted to we can add support for that. To avoid swap we use mapping_set_unevictable() upon inode creation, and put a WARN_ON_ONCE() stop-gap on writepages() for reclaim. Link: https://lkml.kernel.org/r/20230309230545.2930737-7-mcgrof@kernel.org Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> Acked-by: Christian Brauner <brauner@kernel.org> Tested-by: Xin Hao <xhao@linux.alibaba.com> Reviewed-by: Davidlohr Bueso <dave@stgolabs.net> Cc: Adam Manzanares <a.manzanares@samsung.com> Cc: David Hildenbrand <david@redhat.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Hugh Dickins <hughd@google.com> Cc: Kees Cook <keescook@chromium.org> Cc: Matthew Wilcox <willy@infradead.org> Cc: Pankaj Raghav <p.raghav@samsung.com> Cc: Yosry Ahmed <yosryahmed@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>		2023-03-28 16:20:15 -07:00
..
caching	Remove duplicate words inside documentation	2022-09-27 13:21:43 -06:00
cifs	ksmbd: update documentation	2022-10-05 01:15:38 -05:00
ext4	docs: ext4: modify the group desc size to 64	2023-03-07 20:24:05 -05:00
nfs	Documentation: Fix sysfs path for the NFSv4 client identifier	2023-02-15 11:01:03 -05:00
spufs	Documentation: spufs: correct a duplicate word typo	2022-09-27 13:21:44 -06:00
9p.rst	Replace HTTP links with HTTPS ones: 9P FILE SYSTEM	2020-07-13 11:28:12 -06:00
adfs.rst	docs: filesystems: convert adfs.txt to ReST	2020-03-02 13:58:44 -07:00
affs.rst	affs: fix basic permission bits to actually work	2020-08-31 12:20:31 +02:00
afs.rst	AFS: Documentation: fix a few typos in afs.rst	2021-01-21 14:06:00 -07:00
api-summary.rst	block: move fs/block_dev.c to block/bdev.c	2021-09-07 08:39:40 -06:00
autofs-mount-control.rst	Documentation: filesystems: autofs-mount-control: drop doubled words	2020-07-05 14:44:29 -06:00
autofs.rst	docs: filesystems: Fix grammatical error "with" to "which"	2021-11-15 02:54:37 -07:00
automount-support.rst	docs: filesystems: convert automount-support.txt to ReST	2020-05-05 09:22:21 -06:00
befs.rst	docs: filesystems: convert befs.txt to ReST	2020-03-02 14:01:25 -07:00
bfs.rst	docs: filesystems: convert bfs.txt to ReST	2020-03-02 14:01:26 -07:00
btrfs.rst	Documentation: update btrfs list of features and link to readthedocs.io	2022-06-21 14:47:19 +02:00
ceph.rst	ceph: remove Sage's git tree from documentation	2022-10-04 19:18:08 +02:00
coda.rst	Documentation: coda: annotate duplicated words	2020-07-13 10:02:32 -06:00
configfs.rst	configfs: remove mentions of committable items	2022-12-02 11:11:27 +01:00
cramfs.rst	docs: filesystems: convert cramfs.txt to ReST	2020-03-02 14:02:07 -07:00
dax.rst	Documentation/filesystem/dax: update DAX description on erofs	2022-03-16 09:38:38 +08:00
debugfs.rst	debugfs: small Documentation cleaning	2022-11-09 13:58:55 -07:00
devpts.rst	docs: filesystems: convert devpts.txt to ReST	2020-05-05 09:22:21 -06:00
directory-locking.rst	Documentation: filesystems: directory-locking: drop doubled word	2020-07-05 14:44:29 -06:00
dlmfs.rst	ocfs2: replace HTTP links with HTTPS ones	2020-08-07 11:33:22 -07:00
dnotify.rst	docs: filesystems: convert dnotify.txt to ReST	2020-05-05 09:22:22 -06:00
ecryptfs.rst	docs: prevent warnings due to autosectionlabel	2020-03-20 17:01:29 -06:00
efivarfs.rst	docs: filesystems: add info about efivars content	2020-05-25 18:59:59 -06:00
erofs.rst	erofs: add documentation for 'domain_id' mount option	2023-01-16 22:39:29 +08:00
ext2.rst	ext2: remove nobh support	2022-08-02 12:34:04 -04:00
ext3.rst	docs: filesystems: convert ext3.txt to ReST	2020-03-02 14:03:16 -07:00
f2fs.rst	docs: f2fs: fix html doc error	2023-01-06 15:13:16 -08:00
fiemap.rst	A lot of bug fixes and cleanups for ext4, including:	2020-06-05 16:19:28 -07:00
files.rst	file: Rename fcheck lookup_fd_rcu	2020-12-10 12:40:07 -06:00
fscrypt.rst	fscrypt: support decrypting data from large folios	2023-01-28 15:10:12 -08:00
fsverity.rst	fsverity: support verifying data from large folios	2023-01-27 14:46:31 -08:00
fuse-io.rst	docs: filesystems: convert fuse-io.txt to ReST	2020-05-05 09:22:22 -06:00
fuse.rst	fuse: Add module param for CAP_SYS_ADMIN access bypassing allow_other	2022-07-21 16:06:19 +02:00
gfs2-glocks.rst	docs: filesystems: convert gfs2-glocks.txt to ReST	2020-06-02 19:45:05 +02:00
gfs2-uevents.rst	docs: filesystems: convert gfs2-uevents.txt to ReST	2020-03-02 14:03:35 -07:00
gfs2.rst	Documentation: Update filesystems/gfs2.rst	2020-12-01 00:25:20 +01:00
hfs.rst	Replace HTTP links with HTTPS ones: Documentation/filesystems	2020-06-26 11:14:12 -06:00
hfsplus.rst	docs: filesystems: convert hfsplus.txt to ReST	2020-03-02 14:03:47 -07:00
hpfs.rst	Replace HTTP links with HTTPS ones: Documentation/filesystems	2020-06-26 11:14:12 -06:00
idmappings.rst	Documentation: filesystems: correct possessive "its"	2022-09-27 13:21:44 -06:00
index.rst	Documentation: remove reference to now removed mandatory-locking doc	2021-10-05 06:02:53 -04:00
inotify.rst	docs: filesystems: convert inotify.txt to ReST	2020-03-02 14:03:55 -07:00
isofs.rst	docs: filesystems: convert isofs.txt to ReST	2020-03-02 14:04:06 -07:00
journalling.rst	jbd2: drop jbd2_fc_init documentation	2020-11-06 23:01:03 -05:00
locking.rst	fs: port xattr to mnt_idmap	2023-01-19 09:24:28 +01:00
locks.rst	docs: fs: locks.rst: update comment about mandatory file locking	2021-10-19 06:48:21 -04:00
mount_api.rst	A large number of cleanups and bug fixes, with many of the bug fixes	2022-12-12 19:56:37 -08:00
netfs_library.rst	netfs: do not unlock and put the folio twice	2022-07-14 10:10:12 +02:00
nilfs2.rst	docs: filesystems: convert nilfs2.txt to ReST	2020-03-02 14:04:06 -07:00
ntfs3.rst	fs/ntfs3: Document system.ntfs_attrib_be extended attribute	2022-11-12 20:59:45 +03:00
ntfs.rst	docs: filesystems: convert ntfs.txt to ReST	2020-03-02 14:04:06 -07:00
ocfs2-online-filecheck.rst	docs: filesystems: convert ocfs2-online-filecheck.txt to ReST	2020-03-02 14:04:06 -07:00
ocfs2.rst	ocfs2: replace HTTP links with HTTPS ones	2020-08-07 11:33:22 -07:00
omfs.rst	Replace HTTP links with HTTPS ones: OMFS	2020-07-13 11:24:43 -06:00
orangefs.rst	docs: orangefs: fix pvfs2tab literal block	2020-04-28 12:35:47 -06:00
overlayfs.rst	Revert "ovl: turn of SB_POSIXACL with idmapped layers temporarily"	2022-07-15 22:10:51 +02:00
path-lookup.rst	Merge branch 'work.namei' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2021-07-03 11:41:14 -07:00
path-lookup.txt	Replace HTTP links with HTTPS ones: documentation	2020-06-08 09:30:19 -06:00
porting.rst	fs: rename current get acl method	2022-10-20 10:13:27 +02:00
proc.rst	docs: proc.rst: add softnet_stat to /proc/net table	2023-01-02 16:28:24 -07:00
qnx6.rst	Documentation: filesystems: correct possessive "its"	2022-09-27 13:21:44 -06:00
quota.rst	quota: Fixup http links in quota doc	2020-07-09 08:14:01 +02:00
ramfs-rootfs-initramfs.rst	Documentation: Fix intiramfs script name	2021-07-18 23:48:14 +09:00
relay.rst	docs: filesystems: convert relay.txt to ReST	2020-03-02 14:04:41 -07:00
romfs.rst	docs: filesystems: convert romfs.txt to ReST	2020-03-02 14:04:41 -07:00
seq_file.rst	seq_file: document how per-entry resources are managed.	2021-02-26 09:41:05 -08:00
sharedsubtree.rst	docs: filesystems: convert sharedsubtree.txt to ReST	2020-05-05 09:22:23 -06:00
splice.rst	docs: Bring some order to filesystem documentation	2019-03-06 09:46:10 -07:00
squashfs.rst	docs: filesystems: convert squashfs.txt to ReST	2020-03-02 14:04:41 -07:00
sysfs.rst	sysfs: update Documentation	2022-11-09 13:57:59 -07:00
sysv-fs.rst	docs: filesystems: convert sysv-fs.txt to ReST	2020-03-02 14:04:41 -07:00
tmpfs.rst	shmem: add support to ignore swap	2023-03-28 16:20:15 -07:00
ubifs-authentication.rst	docs: ubifs-authentication: Add a top-level heading	2020-09-09 11:53:33 -06:00
ubifs.rst	Documentation: ubifs: Fix compression idiom	2022-10-10 13:01:10 -06:00
udf.rst	udf: Replace HTTP links with HTTPS ones	2020-07-14 14:37:39 +02:00
vfat.rst	docs: filesystems: Fix a mundane typo	2021-03-25 11:51:23 -06:00
vfs.rst	docs: Correct missing "d_" prefix for dentry_operations member d_weak_revalidate	2023-03-07 10:21:11 -07:00
virtiofs.rst	virtiofs: Add mount option and atime behavior to the doc	2020-04-20 17:01:34 +02:00
xfs-delayed-logging-design.rst	Documentation: filesystems: correct possessive "its"	2022-09-27 13:21:44 -06:00
xfs-self-describing-metadata.rst	New code for 5.8:	2020-06-02 19:21:40 -07:00
zonefs.rst	documentation: zonefs: Document sysfs attributes	2022-04-26 14:53:06 +09:00