ext4: properly handle error of ext4_init_block_bitmap in ext4_read_block_bitmap_nowait

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We mark buffer_head of bitmap successfully initialized even error occurs
in ext4_init_block_bitmap. Although we will return error, we will get a
invalid buffer_head of bitmap from next ext4_read_block_bitmap_nowait
which is marked buffer_verified but not successfully initialized actually
in previous ext4_read_block_bitmap_nowait.
Fix this by only marking buffer_head successfully initialized if
ext4_init_block_bitmap successes.

Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com>
Link: https://lore.kernel.org/r/20230221115919.1918161-2-shikemeng@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

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Kemeng Shi 2023-02-21 19:59:13 +08:00 • committed by Theodore Ts'o

parent 98ccceee3e

commit b5aa06bfe9

1 changed files with 7 additions and 5 deletions

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fs/ext4/balloc.c

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