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Date: Sat, 4 Sep 2021 12:49:45 +0800 From: yangerkun <yangerkun@...wei.com> To: <tytso@....edu>, <jack@...e.cz> CC: <linux-ext4@...r.kernel.org>, <yangerkun@...wei.com>, <yukuai3@...wei.com> Subject: [PATCH 1/2] ext4: avoid recheck extent for EXT4_EX_FORCE_CACHE Buffer with verified means that it has been checked before. No need verify and call set_buffer_verified again. Signed-off-by: yangerkun <yangerkun@...wei.com> --- fs/ext4/extents.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index cbf37b2cf871..8559e288472f 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -505,13 +505,16 @@ __read_extent_tree_block(const char *function, unsigned int line, if (err < 0) goto errout; } - if (buffer_verified(bh) && !(flags & EXT4_EX_FORCE_CACHE)) - return bh; - err = __ext4_ext_check(function, line, inode, - ext_block_hdr(bh), depth, pblk); - if (err) - goto errout; - set_buffer_verified(bh); + if (buffer_verified(bh)) { + if (!(flags & EXT4_EX_FORCE_CACHE)) + return bh; + } else { + err = __ext4_ext_check(function, line, inode, + ext_block_hdr(bh), depth, pblk); + if (err) + goto errout; + set_buffer_verified(bh); + } /* * If this is a leaf block, cache all of its entries */ -- 2.31.1
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