diff options
| author |   David Howells <dhowells@redhat.com> | 2026-05-12 13:33:42 +0100 |
|---|---|---|
| committer |   Christian Brauner <brauner@kernel.org> | 2026-05-12 14:42:30 +0200 |
| commit | 2c8f4742bb76117d735f92a3932d85239b16c494 (patch) | |
| tree | 71c62e508c53aba1ee80510dc739c659caa214e6 /tools/testing/selftests/dm-verity/git:/ssh:/git@git.zx2c4.com | |
| parent | netfs: Fix netfs_read_to_pagecache() to pause on subreq failure (diff) | |
netfs: Fix potential for tearing in ->remote_i_size and ->zero_point
Fix potential tearing in using ->remote_i_size and ->zero_point by copying
i_size_read() and i_size_write() and using the same seqcount as for i_size.
We need to make sure that netfslib and the filesystems that use it always
hold i_lock whilst updating any of the sizes to prevent i_size_seqcount
from getting corrupted.
Fixes: 4058f742105e ("netfs: Keep track of the actual remote file size")
Fixes: 100ccd18bb41 ("netfs: Optimise away reads above the point at which there can be no data")
Closes: https://sashiko.dev/#/patchset/20260414082004.3756080-1-dhowells%40redhat.com
Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://patch.msgid.link/20260512123404.719402-6-dhowells@redhat.com
cc: Paulo Alcantara <pc@manguebit.org>
cc: Matthew Wilcox <willy@infradead.org>
cc: netfs@lists.linux.dev
cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'tools/testing/selftests/dm-verity/git:/ssh:/git@git.zx2c4.com')
0 files changed, 0 insertions, 0 deletions