kernel/linux.git/fs/ext2/inode.c, branch v6.12.80

ext2: Handle fiemap on empty files to prevent EINVAL

2025-08-20T16:30:21+00:00

[ Upstream commit a099b09a3342a0b28ea330e405501b5b4d0424b4 ] Previously, ext2_fiemap would unconditionally apply "len = min_t(u64, len, i_size_read(inode));", When inode->i_size was 0 (for an empty file), this would reduce the requested len to 0. Passing len = 0 to iomap_fiemap could then result in an -EINVAL error, even for valid queries on empty files. Link: https://github.com/linux-test-project/ltp/issues/1246 Signed-off-by: Wei Gao Signed-off-by: Jan Kara Link: https://patch.msgid.link/20250613152402.3432135-1-wegao@suse.com Signed-off-by: Sasha Levin

fs: Convert aops->write_begin to take a folio

2024-08-07T09:33:21+00:00

Convert all callers from working on a page to working on one page of a folio (support for working on an entire folio can come later). Removes a lot of folio->page->folio conversions. Reviewed-by: Josef Bacik Signed-off-by: Matthew Wilcox (Oracle) Signed-off-by: Christian Brauner

fs: Convert aops->write_end to take a folio

2024-08-07T09:32:02+00:00

Most callers have a folio, and most implementations operate on a folio, so remove the conversion from folio->page->folio to fit through this interface. Reviewed-by: Josef Bacik Signed-off-by: Matthew Wilcox (Oracle) Signed-off-by: Christian Brauner

ext2: set FMODE_CAN_ODIRECT instead of a dummy direct_IO method

2024-04-04T14:27:54+00:00

Since commit a2ad63daa88b ("VFS: add FMODE_CAN_ODIRECT file flag") file systems can just set the FMODE_CAN_ODIRECT flag at open time instead of wiring up a dummy direct_IO method to indicate support for direct I/O. Signed-off-by: Ritesh Harjani (IBM) Signed-off-by: Jan Kara Message-Id: <94f78492f55c3f421359fb6e0d8fab6e79ea17b2.1709215665.git.ritesh.list@gmail.com>

ext2: Drop GFP_NOFS use in ext2_get_blocks()

2024-01-23T18:21:10+00:00

ext2_get_blocks() calls sb_issue_zeroout() with GFP_NOFS flag. However the call is performed under inode->i_rwsem and EXT2_I(inode)->i_truncate_mutex neither of which is acquired during direct fs reclaim. So it is safe to change the gfp mask to GFP_KERNEL. Signed-off-by: Jan Kara

fs: convert error_remove_page to error_remove_folio

2023-12-11T00:51:42+00:00

There were already assertions that we were not passing a tail page to error_remove_page(), so make the compiler enforce that by converting everything to pass and use a folio. Link: https://lkml.kernel.org/r/20231117161447.2461643-7-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) Cc: Naoya Horiguchi Signed-off-by: Andrew Morton

ext2: convert to new timestamp accessors

2023-10-18T11:26:21+00:00

Convert to using the new inode timestamp accessor functions. Signed-off-by: Jeff Layton Link: https://lore.kernel.org/r/20231004185347.80880-32-jlayton@kernel.org Signed-off-by: Christian Brauner

Merge tag 'for_v6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

2023-08-30T19:10:50+00:00

Pull ext2, quota, and udf updates from Jan Kara: - fixes for possible use-after-free issues with quota when racing with chown - fixes for ext2 crashing when xattr allocation races with another block allocation to the same file from page writeback code - fix for block number overflow in ext2 - marking of reiserfs as obsolete in MAINTAINERS - assorted minor cleanups * tag 'for_v6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: ext2: Fix kernel-doc warnings ext2: improve consistency of ext2_fsblk_t datatype usage ext2: dump current reservation window info ext2: fix race between setxattr and write back ext2: introduce new flags argument for ext2_new_blocks() ext2: remove ext2_new_block() ext2: fix datatype of block number in ext2_xattr_set2() udf: Drop pointless aops assignment quota: use lockdep_assert_held_write in dquot_load_quota_sb MAINTAINERS: change reiserfs status to obsolete udf: Fix -Wstringop-overflow warnings quota: simplify drop_dquot_ref() quota: fix dqput() to follow the guarantees dquot_srcu should provide quota: add new helper dquot_active() quota: rename dquot_active() to inode_quota_active() quota: factor out dquot_write_dquot() ext2: remove redundant assignment to variable desc and variable best_desc

ext2: Fix kernel-doc warnings

2023-08-21T16:56:50+00:00

Document a few parameters of ext2_alloc_blocks(). Redo the alloc_new_reservation() and find_next_reservable_window() kernel-doc entirely. Signed-off-by: Matthew Wilcox (Oracle) Signed-off-by: Jan Kara Message-Id: <20230818201121.2720451-1-willy@infradead.org>

ext2: improve consistency of ext2_fsblk_t datatype usage

2023-08-18T10:54:54+00:00

The ext2 block allocation/deallocation functions and their respective calls use a mixture of unsigned long and ext2_fsblk_t datatypes to index the desired ext2 block. This commit replaces occurrences of unsigned long with ext2_fsblk_t, covering the functions ext2_new_block(), ext2_new_blocks(), ext2_free_blocks(), ext2_free_data() and ext2_free_branches(). This commit is rather conservative, and only replaces unsigned long with ext2_fsblk_t if the variable is used to index a specific ext2 block. Signed-off-by: Georg Ottinger Signed-off-by: Jan Kara Message-Id: <20230817195925.10268-1-g.ottinger@gmx.at>