https://github.com/torvalds/linux
Revision 21b200d091826a83aafc95d847139b2b0582f6d1 authored by Aurelien Aptel on 05 February 2021, 14:42:48 UTC, committed by Steve French on 05 February 2021, 19:17:48 UTC
Assuming
- //HOST/a is mounted on /mnt
- //HOST/b is mounted on /mnt/b

On a slow connection, running 'df' and killing it while it's
processing /mnt/b can make cifs_get_inode_info() returns -ERESTARTSYS.

This triggers the following chain of events:
=> the dentry revalidation fail
=> dentry is put and released
=> superblock associated with the dentry is put
=> /mnt/b is unmounted

This patch makes cifs_d_revalidate() return the error instead of 0
(invalid) when cifs_revalidate_dentry() fails, except for ENOENT (file
deleted) and ESTALE (file recreated).

Signed-off-by: Aurelien Aptel <aaptel@suse.com>
Suggested-by: Shyam Prasad N <nspmangalore@gmail.com>
Reviewed-by: Shyam Prasad N <nspmangalore@gmail.com>
CC: stable@vger.kernel.org
Signed-off-by: Steve French <stfrench@microsoft.com>
1 parent 91792bb
History
Tip revision: 21b200d091826a83aafc95d847139b2b0582f6d1 authored by Aurelien Aptel on 05 February 2021, 14:42:48 UTC
cifs: report error instead of invalid when revalidating a dentry fails
Tip revision: 21b200d
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