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| author |   Andreas Gruenbacher <agruenba@redhat.com> | 2020-04-28 01:15:41 +0200 |
|---|---|---|
| committer | Andreas Gruenbacher <agruenba@redhat.com> | 2020-05-08 15:15:12 +0200 |
| commit | aa83da7f47b26c9587bade6c4bc4736ffa308f0a (patch) | |
| tree | af08b77d81b99274741281a46fc6e2b495948781 /fs/gfs2/inode.c | |
| parent | gfs2: Another gfs2_walk_metadata fix (diff) | |
| download | linux-dev-aa83da7f47b26c9587bade6c4bc4736ffa308f0a.tar.xz linux-dev-aa83da7f47b26c9587bade6c4bc4736ffa308f0a.zip | |
gfs2: More gfs2_find_jhead fixes
It turns out that when extending an existing bio, gfs2_find_jhead fails to
check if the block number is consecutive, which leads to incorrect reads for
fragmented journals.
In addition, limit the maximum bio size to an arbitrary value of 2 megabytes:
since commit 07173c3ec276 ("block: enable multipage bvecs"), if we just keep
adding pages until bio_add_page fails, bios will grow much larger than useful,
which pins more memory than necessary with barely any additional performance
gains.
Fixes: f4686c26ecc3 ("gfs2: read journal in large chunks")
Cc: stable@vger.kernel.org # v5.2+
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Diffstat (limited to 'fs/gfs2/inode.c')
0 files changed, 0 insertions, 0 deletions