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| author | Philippe Liard <pliard@google.com> | 2020-06-02 07:45:23 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-06-02 20:59:05 +0300 |
| commit | 93e72b3c612adcaca13d874fcc86c53e6c8da541 (patch) | |
| tree | 2b94b6fb982fdbbed4400cbc0bbe3e1815c4b549 /fs/squashfs/decompressor.h | |
| parent | 9bf9511e3d9f328c03f6f79bfb741c3d18f2f2c0 (diff) | |
| download | linux-93e72b3c612adcaca13d874fcc86c53e6c8da541.tar.xz | |
squashfs: migrate from ll_rw_block usage to BIO
ll_rw_block() function has been deprecated in favor of BIO which appears
to come with large performance improvements.
This patch decreases boot time by close to 40% when using squashfs for
the root file-system. This is observed at least in the context of
starting an Android VM on Chrome OS using crosvm. The patch was tested
on 4.19 as well as master.
This patch is largely based on Adrien Schildknecht's patch that was
originally sent as https://lkml.org/lkml/2017/9/22/814 though with some
significant changes and simplifications while also taking Phillip
Lougher's feedback into account, around preserving support for
FILE_CACHE in particular.
[akpm@linux-foundation.org: fix build error reported by Randy]
Link: http://lkml.kernel.org/r/319997c2-5fc8-f889-2ea3-d913308a7c1f@infradead.org
Signed-off-by: Philippe Liard <pliard@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Adrien Schildknecht <adrien+dev@schischi.me>
Cc: Phillip Lougher <phillip@squashfs.org.uk>
Cc: Guenter Roeck <groeck@chromium.org>
Cc: Daniel Rosenberg <drosen@google.com>
Link: https://chromium.googlesource.com/chromiumos/platform/crosvm
Link: http://lkml.kernel.org/r/20191106074238.186023-1-pliard@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/squashfs/decompressor.h')
| -rw-r--r-- | fs/squashfs/decompressor.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/squashfs/decompressor.h b/fs/squashfs/decompressor.h index ec8617523e56..1b9ccfd0aa51 100644 --- a/fs/squashfs/decompressor.h +++ b/fs/squashfs/decompressor.h @@ -10,13 +10,14 @@ * decompressor.h */ +#include <linux/bio.h> + struct squashfs_decompressor { void *(*init)(struct squashfs_sb_info *, void *); void *(*comp_opts)(struct squashfs_sb_info *, void *, int); void (*free)(void *); int (*decompress)(struct squashfs_sb_info *, void *, - struct buffer_head **, int, int, int, - struct squashfs_page_actor *); + struct bio *, int, int, struct squashfs_page_actor *); int id; char *name; int supported; |