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| author | Eric Biggers <ebiggers@google.com> | 2022-08-15 16:50:51 -0700 |
|---|---|---|
| committer | Eric Biggers <ebiggers@google.com> | 2022-09-06 15:15:56 -0700 |
| commit | 14db0b3c7b837f4edeb7c1794290c2f345c7f627 (patch) | |
| tree | 910d1d1587b9e30030ba477777d42cacf1fac462 /fs/f2fs/data.c | |
| parent | 272ac1500372183ffd54b0c9f43f52afc482e610 (diff) | |
| download | linux-14db0b3c7b837f4edeb7c1794290c2f345c7f627.tar.gz | |
fscrypt: stop using PG_error to track error status
As a step towards freeing the PG_error flag for other uses, change ext4 and f2fs to stop using PG_error to track decryption errors. Instead, if a decryption error occurs, just mark the whole bio as failed. The coarser granularity isn't really a problem since it isn't any worse than what the block layer provides, and errors from a multi-page readahead aren't reported to applications unless a single-page read fails too. Signed-off-by: Eric Biggers <ebiggers@google.com> Reviewed-by: Chao Yu <chao@kernel.org> # for f2fs part Link: https://lore.kernel.org/r/20220815235052.86545-2-ebiggers@kernel.org
Diffstat (limited to 'fs/f2fs/data.c')
| -rw-r--r-- | fs/f2fs/data.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index aa3ccddfa037..93cc2ec51c2a 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -139,7 +139,7 @@ static void f2fs_finish_read_bio(struct bio *bio, bool in_task) continue; } - /* PG_error was set if decryption or verity failed. */ + /* PG_error was set if verity failed. */ if (bio->bi_status || PageError(page)) { ClearPageUptodate(page); /* will re-read again later */ @@ -185,7 +185,7 @@ static void f2fs_verify_bio(struct work_struct *work) struct page *page = bv->bv_page; if (!f2fs_is_compressed_page(page) && - !PageError(page) && !fsverity_verify_page(page)) + !fsverity_verify_page(page)) SetPageError(page); } } else { @@ -236,10 +236,9 @@ static void f2fs_handle_step_decompress(struct bio_post_read_ctx *ctx, bio_for_each_segment_all(bv, ctx->bio, iter_all) { struct page *page = bv->bv_page; - /* PG_error was set if decryption failed. */ if (f2fs_is_compressed_page(page)) - f2fs_end_read_compressed_page(page, PageError(page), - blkaddr, in_task); + f2fs_end_read_compressed_page(page, false, blkaddr, + in_task); else all_compressed = false; @@ -259,14 +258,17 @@ static void f2fs_post_read_work(struct work_struct *work) { struct bio_post_read_ctx *ctx = container_of(work, struct bio_post_read_ctx, work); + struct bio *bio = ctx->bio; - if (ctx->enabled_steps & STEP_DECRYPT) - fscrypt_decrypt_bio(ctx->bio); + if ((ctx->enabled_steps & STEP_DECRYPT) && !fscrypt_decrypt_bio(bio)) { + f2fs_finish_read_bio(bio, true); + return; + } if (ctx->enabled_steps & STEP_DECOMPRESS) f2fs_handle_step_decompress(ctx, true); - f2fs_verify_and_finish_bio(ctx->bio, true); + f2fs_verify_and_finish_bio(bio, true); } static void f2fs_read_end_io(struct bio *bio) |