https://github.com/torvalds/linux
Revision de4eceab578ead12a71e5b5588a57e142bbe8ceb authored by Steve French on 09 November 2023, 21:28:12 UTC, committed by Steve French on 10 November 2023, 08:00:30 UTC
When multiple mounts are to the same share from the same client it was not possible to determine which section of /proc/fs/cifs/Stats (and DebugData) correspond to that mount. In some recent examples this turned out to be a significant problem when trying to analyze performance data - since there are many cases where unless we know the tree id and session id we can't figure out which stats (e.g. number of SMB3.1.1 requests by type, the total time they take, which is slowest, how many fail etc.) apply to which mount. The only existing loosely related ioctl CIFS_IOC_GET_MNT_INFO does not return the information needed to uniquely identify which tcon is which mount although it does return various flags and device info. Add a cifs.ko ioctl CIFS_IOC_GET_TCON_INFO (0x800ccf0c) to return tid, session id, tree connect count. Cc: stable@vger.kernel.org Reviewed-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
1 parent 5e2fd17
Tip revision: de4eceab578ead12a71e5b5588a57e142bbe8ceb authored by Steve French on 09 November 2023, 21:28:12 UTC
smb3: allow dumping session and tcon id to improve stats analysis and debugging
smb3: allow dumping session and tcon id to improve stats analysis and debugging
Tip revision: de4ecea
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| fs | ||
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| .clang-format | -rw-r--r-- | 20.1 KB |
| .cocciconfig | -rw-r--r-- | 59 bytes |
| .get_maintainer.ignore | -rw-r--r-- | 151 bytes |
| .gitattributes | -rw-r--r-- | 105 bytes |
| .gitignore | -rw-r--r-- | 2.0 KB |
| .mailmap | -rw-r--r-- | 35.9 KB |
| .rustfmt.toml | -rw-r--r-- | 369 bytes |
| COPYING | -rw-r--r-- | 496 bytes |
| CREDITS | -rw-r--r-- | 100.0 KB |
| Kbuild | -rw-r--r-- | 2.5 KB |
| Kconfig | -rw-r--r-- | 555 bytes |
| MAINTAINERS | -rw-r--r-- | 715.3 KB |
| Makefile | -rw-r--r-- | 65.7 KB |
| README | -rw-r--r-- | 727 bytes |
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