ext4: Clear dirty bit from pages without data to write

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With journalled data it can happen that checkpointing code will write
out page contents without clearing the page dirty bit. The logic in
ext4_page_nomap_can_writeout() then results in us never calling
mpage_submit_page() and thus clearing the dirty bit. Drop the
optimization with ext4_page_nomap_can_writeout() and just always call to
mpage_submit_page(). ext4_bio_write_page() knows when to redirty the
page and the additional clearing & setting of page dirty bit for ordered
mode writeout is not that expensive to jump through the hoops for it.

Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20230329154950.19720-4-jack@suse.cz
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

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Jan Kara 2023-03-29 17:49:35 +02:00 • committed by Theodore Ts'o

parent 265e72efa9

commit 5e1bdea639

1 changed files with 5 additions and 20 deletions

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fs/ext4/inode.c

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