cifs: keep referral server sessions alive

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At every mount, keep all sessions alive that were used for chasing the
DFS referrals as long as the dfs mounts are active.

Use those sessions in DFS cache to refresh all active tcons as well as
cached entries.  They will be managed by a list of mount_group
structures that will be indexed by a randomly generated uuid at mount
time, so we can put all the sessions related to specific dfs mounts
and avoid leaking them.

Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

...

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Paulo Alcantara 2021-06-04 19:25:29 -03:00 • committed by Steve French

parent 2b133b7e21

commit c9f7110399

4 changed files with 275 additions and 468 deletions

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2

fs/cifs/cifs_fs_sb.h

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56

fs/cifs/connect.c

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711

fs/cifs/dfs_cache.c

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8

fs/cifs/dfs_cache.h

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