kernel/linux.git/fs/ext4/readpage.c, branch v6.12.102

ext4: reduce stack usage in ext4_mpage_readpages()

2024-08-27T01:47:03+00:00

This function is very similar to do_mpage_readpage() and a similar approach to that taken in commit 12ac5a65cb56 will work. As in do_mpage_readpage(), we only use this array for checking block contiguity and we can do that more efficiently with a little arithmetic. Signed-off-by: Matthew Wilcox (Oracle) Link: https://patch.msgid.link/20240718223005.568869-1-willy@infradead.org Signed-off-by: Theodore Ts'o

ext4: remove calls to to set/clear the folio error flag

2024-05-09T04:23:51+00:00

Nobody checks this flag on ext4 folios, stop setting and clearing it. Cc: Theodore Ts'o Cc: Andreas Dilger Cc: linux-ext4@vger.kernel.org Signed-off-by: Matthew Wilcox (Oracle) Link: https://lore.kernel.org/r/20240420025029.2166544-11-willy@infradead.org Signed-off-by: Theodore Ts'o

ext4: use folio_end_read()

2023-10-18T21:34:16+00:00

folio_end_read() is the perfect fit for ext4. Link: https://lkml.kernel.org/r/20231004165317.1061855-5-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) Cc: Albert Ou Cc: Alexander Gordeev Cc: Andreas Dilger Cc: Christian Borntraeger Cc: Christophe Leroy Cc: Geert Uytterhoeven Cc: Heiko Carstens Cc: Ivan Kokshaysky Cc: Matt Turner Cc: Michael Ellerman Cc: Nicholas Piggin Cc: Palmer Dabbelt Cc: Paul Walmsley Cc: Richard Henderson Cc: Sven Schnelle Cc: "Theodore Ts'o" Cc: Thomas Bogendoerfer Cc: Vasily Gorbik Signed-off-by: Andrew Morton

ext4: Call fsverity_verify_folio()

2023-06-15T04:02:10+00:00

Now that fsverity supports working on entire folios, call fsverity_verify_folio() instead of fsverity_verify_page() Reported-by: Eric Biggers Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: Eric Biggers Reviewed-by: Ritesh Harjani (IBM) Link: https://lore.kernel.org/r/20230516192713.1070469-1-willy@infradead.org Signed-off-by: Theodore Ts'o

ext4: Use a folio iterator in __read_end_io()

2023-04-06T17:39:52+00:00

Iterate once per folio, not once per page. Signed-off-by: Matthew Wilcox (Oracle) Link: https://lore.kernel.org/r/20230324180129.1220691-27-willy@infradead.org Signed-off-by: Theodore Ts'o

ext4: Convert ext4_mpage_readpages() to work on folios

2023-04-06T17:39:52+00:00

This definitely doesn't include support for large folios; there are all kinds of assumptions about the number of buffers attached to a folio. But it does remove several calls to compound_head(). Signed-off-by: Matthew Wilcox (Oracle) Link: https://lore.kernel.org/r/20230324180129.1220691-24-willy@infradead.org Signed-off-by: Theodore Ts'o

ext4: simplify ext4_readpage_limit()

2023-01-10T03:06:08+00:00

Now that the implementation of FS_IOC_ENABLE_VERITY has changed to not involve reading back Merkle tree blocks that were previously written, there is no need for ext4_readpage_limit() to allow for this case. Signed-off-by: Eric Biggers Tested-by: Ojaswin Mujoo Link: https://lore.kernel.org/r/20221223203638.41293-9-ebiggers@kernel.org

Merge tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/fscrypt

2022-12-13T04:06:35+00:00

Pull fsverity updates from Eric Biggers: "The main change this cycle is to stop using the PG_error flag to track verity failures, and instead just track failures at the bio level. This follows a similar fscrypt change that went into 6.1, and it is a step towards freeing up PG_error for other uses. There's also one other small cleanup" * tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/fscrypt: fsverity: simplify fsverity_get_digest() fsverity: stop using PG_error to track error status

ext4: replace kmem_cache_create with KMEM_CACHE

2022-12-09T02:49:24+00:00

Replace kmem_cache_create with KMEM_CACHE macro that guaranteed struct alignment Signed-off-by: JunChao Sun Reviewed-by: Jan Kara Link: https://lore.kernel.org/r/20221109153822.80250-1-sunjunchao2870@gmail.com Signed-off-by: Theodore Ts'o

fsverity: stop using PG_error to track error status

2022-11-29T07:15:10+00:00

As a step towards freeing the PG_error flag for other uses, change ext4 and f2fs to stop using PG_error to track verity errors. Instead, if a verity 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. f2fs supports compression, which makes the f2fs changes a bit more complicated than desired, but the basic premise still works. Note: there are still a few uses of PageError in f2fs, but they are on the write path, so they are unrelated and this patch doesn't touch them. Reviewed-by: Chao Yu Acked-by: Jaegeuk Kim Signed-off-by: Eric Biggers Link: https://lore.kernel.org/r/20221129070401.156114-1-ebiggers@kernel.org