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block: Add bio_max_segs

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It's often inconvenient to use BIO_MAX_PAGES due to min() requiring the
sign to be the same.  Introduce bio_max_segs() and change BIO_MAX_PAGES to
be unsigned to make it easier for the users.

Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Matthew Wilcox (Oracle)
2021-01-29 04:38:57 +00:00
committed by Jens Axboe
parent 94d4bffdda
commit 5f7136db82
20 changed files with 44 additions and 52 deletions
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fs/f2fs/node.c
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@@ -2747,7 +2747,7 @@ int f2fs_restore_node_summary(struct f2fs_sb_info *sbi,
sum_entry = &sum->entries[0];
for (i = 0; i < last_offset; i += nrpages, addr += nrpages) {
nrpages = min(last_offset - i, BIO_MAX_PAGES);
nrpages = bio_max_segs(last_offset - i);
/* readahead node pages */
f2fs_ra_meta_pages(sbi, addr, nrpages, META_POR, true);