mirror of https://github.com/torvalds/linux.git
58fd191f99
Currently, ext4_set_inode_mapping_order() does not set max folio order for files with the data journalling flag. For files that already have large folios enabled, ext4_inode_journal_mode() ignores the data journalling flag once max folio order is set. This is not because data journalling cannot work with large folios, but because credit estimates will go through the roof if there are too many blocks per folio. Since the real constraint is blocks-per-folio, to support data=journal under LBS, we now set max folio order to be equal to min folio order for files with the journalling flag. When LBS is disabled, the max folio order remains unset as before. Therefore, before ext4_change_inode_journal_flag() switches the journalling mode, we call truncate_pagecache() to drop all page cache for that inode, and filemap_write_and_wait() is called unconditionally. After that, once the journalling mode has been switched, we can safely reset the inode mapping order, and the mapping_large_folio_support() check in ext4_inode_journal_mode() can be removed. Suggested-by: Jan Kara <jack@suse.cz> Suggested-by: Dan Carpenter <dan.carpenter@linaro.org> Signed-off-by: Baokun Li <libaokun1@huawei.com> Reviewed-by: Zhang Yi <yi.zhang@huawei.com> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Ojaswin Mujoo <ojaswin@linux.ibm.com> Message-ID: <20251121090654.631996-22-libaokun@huaweicloud.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> |
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| .. | ||
| .kunitconfig | ||
| Kconfig | ||
| Makefile | ||
| acl.c | ||
| acl.h | ||
| balloc.c | ||
| bitmap.c | ||
| block_validity.c | ||
| crypto.c | ||
| dir.c | ||
| ext4.h | ||
| ext4_extents.h | ||
| ext4_jbd2.c | ||
| ext4_jbd2.h | ||
| extents.c | ||
| extents_status.c | ||
| extents_status.h | ||
| fast_commit.c | ||
| fast_commit.h | ||
| file.c | ||
| fsmap.c | ||
| fsmap.h | ||
| fsync.c | ||
| hash.c | ||
| ialloc.c | ||
| indirect.c | ||
| inline.c | ||
| inode-test.c | ||
| inode.c | ||
| ioctl.c | ||
| mballoc-test.c | ||
| mballoc.c | ||
| mballoc.h | ||
| migrate.c | ||
| mmp.c | ||
| move_extent.c | ||
| namei.c | ||
| orphan.c | ||
| page-io.c | ||
| readpage.c | ||
| resize.c | ||
| super.c | ||
| symlink.c | ||
| sysfs.c | ||
| truncate.h | ||
| verity.c | ||
| xattr.c | ||
| xattr.h | ||
| xattr_hurd.c | ||
| xattr_security.c | ||
| xattr_trusted.c | ||
| xattr_user.c | ||