ext4: add new helper interface ext4_try_to_trim_range()

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There is no functional change in this patch but just split the
codes, which serachs free block and does trim, into a new function
ext4_try_to_trim_range. This is preparing for the following async
backgroup discard.

Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Wang Jianchao <wangjianchao@kuaishou.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20210724074124.25731-3-jianchao.wan9@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

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Wang Jianchao 2021-07-24 15:41:21 +08:00 • committed by Theodore Ts'o

parent bd2eea8d0a

commit 6920b39132

1 changed files with 57 additions and 45 deletions

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102

fs/ext4/mballoc.c

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