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authorDavid Sterba <dsterba@suse.com>2019-10-02 00:06:15 +0200
committerDavid Sterba <dsterba@suse.com>2019-11-18 12:46:57 +0100
commit1e4eb7465438e47cc3718a02d4326dd034f3c0da (patch)
tree35ba323e319d89f15c3c45133144fa23dd96cbae /fs/btrfs/zlib.c
parentc4bf665a3197554a696121d20f3bf11d084a6961 (diff)
downloadlinux-1e4eb7465438e47cc3718a02d4326dd034f3c0da.tar.bz2
btrfs: switch compression callbacks to direct calls
The indirect calls bring some overhead due to spectre vulnerability mitigations. The number of cases is small and below the threshold (10-20) where indirect call would be better. Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Nikolay Borisov <nborisov@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/zlib.c')
-rw-r--r--fs/btrfs/zlib.c3
1 files changed, 0 insertions, 3 deletions
diff --git a/fs/btrfs/zlib.c b/fs/btrfs/zlib.c
index 4091f94ba378..8bb6f19ab369 100644
--- a/fs/btrfs/zlib.c
+++ b/fs/btrfs/zlib.c
@@ -420,9 +420,6 @@ const struct btrfs_compress_op btrfs_zlib_compress = {
.put_workspace = zlib_put_workspace,
.alloc_workspace = zlib_alloc_workspace,
.free_workspace = zlib_free_workspace,
- .compress_pages = zlib_compress_pages,
- .decompress_bio = zlib_decompress_bio,
- .decompress = zlib_decompress,
.max_level = 9,
.default_level = BTRFS_ZLIB_DEFAULT_LEVEL,
};