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android_kernel_samsung_sm8650/fs/afs
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David Howells 48b3ee0134 afs: Fix file locking on R/O volumes to operate in local mode 
[ Upstream commit b590eb41be766c5a63acc7e8896a042f7a4e8293 ]

AFS doesn't really do locking on R/O volumes as fileservers don't maintain
state with each other and thus a lock on a R/O volume file on one
fileserver will not be be visible to someone looking at the same file on
another fileserver.

Further, the server may return an error if you try it.

Fix this by doing what other AFS clients do and handle filelocking on R/O
volume files entirely within the client and don't touch the server.

Fixes: 6c6c1d63c2 ("afs: Provide mount-time configurable byte-range file locking emulation")
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-12-03 07:32:08 +01:00
..
addr_list.c afs: Use kfree_rcu() instead of casting kfree() to rcu_callback_t 2020-03-13 10:47:33 -07:00
afs_cm.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
afs_fs.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
afs_vl.h afs: Implement client support for the YFSVL.GetCellName RPC op 2020-06-04 15:37:57 +01:00
afs.h afs: Implement client support for the YFSVL.GetCellName RPC op 2020-06-04 15:37:57 +01:00
callback.c netfs: Fix gcc-12 warning by embedding vfs inode in netfs_i_context 2022-06-09 13:55:00 -07:00
cell.c afs: Use refcount_t rather than atomic_t 2022-08-02 18:10:11 +01:00
cmservice.c use less confusing names for iov_iter direction initializers 2023-02-09 11:28:04 +01:00
dir_edit.c netfs: Fix gcc-12 warning by embedding vfs inode in netfs_i_context 2022-06-09 13:55:00 -07:00
dir_silly.c netfs: Fix gcc-12 warning by embedding vfs inode in netfs_i_context 2022-06-09 13:55:00 -07:00
dir.c afs: Fix setting of mtime when creating a file/dir/symlink 2023-06-14 11:15:16 +02:00
dynroot.c afs: Make error on cell lookup failure consistent with OpenAFS 2023-12-03 07:32:07 +01:00
file.c use less confusing names for iov_iter direction initializers 2023-02-09 11:28:04 +01:00
flock.c afs: Use the operation issue time instead of the reply time for callbacks 2022-09-01 11:44:13 +01:00
fs_operation.c netfs: Fix gcc-12 warning by embedding vfs inode in netfs_i_context 2022-06-09 13:55:00 -07:00
fs_probe.c afs: Fix lost servers_outstanding count 2022-12-31 13:33:08 +01:00
fsclient.c afs: Use the operation issue time instead of the reply time for callbacks 2022-09-01 11:44:13 +01:00
inode.c afs: Fix getattr to report server i_size on dirs, not local size 2023-05-11 23:03:38 +09:00
internal.h afs: Fix afs_server_list to be cleaned up with RCU 2023-12-03 07:32:06 +01:00
Kconfig afs: Convert afs to use the new fscache API 2022-01-07 13:44:47 +00:00
main.c afs: Convert afs to use the new fscache API 2022-01-07 13:44:47 +00:00
Makefile afs: Convert afs to use the new fscache API 2022-01-07 13:44:47 +00:00
misc.c afs: Return -EAGAIN, not -EREMOTEIO, when a file already locked 2022-09-06 21:33:01 -04:00
mntpt.c afs: Remove check of PageError 2022-06-29 08:51:06 -04:00
proc.c afs: Use refcount_t rather than atomic_t 2022-08-02 18:10:11 +01:00
protocol_afs.h afs: Fix corruption in reads at fpos 2G-4G from an OpenAFS server 2021-09-13 09:14:21 +01:00
protocol_uae.h afs: Add support for the UAE error table 2019-06-28 18:37:53 +01:00
protocol_yfs.h afs: Fix corruption in reads at fpos 2G-4G from an OpenAFS server 2021-09-13 09:14:21 +01:00
rotate.c afs: Adjust ACK interpretation to try and cope with NAT 2022-05-22 21:03:02 +01:00
rxrpc.c use less confusing names for iov_iter direction initializers 2023-02-09 11:28:04 +01:00
security.c afs: Prefer struct_size over open coded arithmetic 2022-04-26 10:20:00 -05:00
server_list.c afs: Fix afs_server_list to be cleaned up with RCU 2023-12-03 07:32:06 +01:00
server.c afs: Fix server->active leak in afs_put_server 2022-11-30 10:02:37 -08:00
super.c afs: Fix file locking on R/O volumes to operate in local mode 2023-12-03 07:32:08 +01:00
vl_alias.c afs: Add tracing for cell refcount and active user count 2020-10-16 14:39:21 +01:00
vl_list.c afs: Use refcount_t rather than atomic_t 2022-08-02 18:10:11 +01:00
vl_probe.c afs: Fix vlserver probe RTT handling 2023-06-21 16:01:02 +02:00
vl_rotate.c afs: Return ENOENT if no cell DNS record can be found 2023-12-03 07:32:08 +01:00
vlclient.c afs: Fix fall-through warnings for Clang 2021-05-25 07:30:34 -10:00
volume.c afs: Use refcount_t rather than atomic_t 2022-08-02 18:10:11 +01:00
write.c afs: Fix accidental truncation when storing data 2023-07-19 16:22:06 +02:00
xattr.c afs: Stop listxattr() from listing "afs.*" attributes 2021-03-15 17:09:54 +00:00
xdr_fs.h afs: Fix directory entry size calculation 2021-01-04 12:25:19 +00:00
yfsclient.c afs: Use the operation issue time instead of the reply time for callbacks 2022-09-01 11:44:13 +01:00