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| author | David Howells | 2017-11-02 16:27:51 +0100 |
|---|---|---|
| committer | David Howells | 2017-11-13 16:38:19 +0100 |
| commit | 1199db603511d7463d9d3840f96f61967affc766 (patch) | |
| tree | f2f3031337d905ffbfd82ece97b2e89db501df01 /Documentation/filesystems/afs.txt | |
| parent | afs: Only progress call state at end of Tx phase from rxrpc callback (diff) | |
| download | kernel-qcow2-linux-1199db603511d7463d9d3840f96f61967affc766.tar.gz kernel-qcow2-linux-1199db603511d7463d9d3840f96f61967affc766.tar.xz kernel-qcow2-linux-1199db603511d7463d9d3840f96f61967affc766.zip | |
afs: Fix total-length calculation for multiple-page send
Fix the total-length calculation in afs_make_call() when the operation
being dispatched has data from a series of pages attached.
Despite the patched code looking like that it should reduce mathematically
to the current code, it doesn't because the 32-bit unsigned arithmetic
being used to calculate the page-offset-difference doesn't correctly extend
to a 64-bit value when the result is effectively negative.
Without this, some FS.StoreData operations that span multiple pages fail,
reporting too little or too much data.
Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'Documentation/filesystems/afs.txt')
0 files changed, 0 insertions, 0 deletions