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ext4: generalize EXT4_GET_BLOCKS_IO_SUBMIT flag usage

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Currently, the EXT4_GET_BLOCKS_IO_SUBMIT flag is only used during data
writeback to indicate that in ordered mode, the journal commit thread
should skip re-submitting data and simply wait for I/O completion.

To prepare for later patches that need to detect I/O submission context
in ext4_map_blocks(), generalizes the meaning of
EXT4_GET_BLOCKS_IO_SUBMIT. This flag will be set during:
 1) data I/O writeback,
 2) I/O completion extents conversion,
 3) journal performing commit in fast_commit.

This change doesn't affect current usage of this flag and provides a
clear way to identify I/O submission context.

Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Link: https://patch.msgid.link/20250423085257.122685-3-yi.zhang@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Zhang Yi
2025-04-23 16:52:50 +08:00
committed by Theodore Ts'o
parent 53ce42accd
commit 86b349ce03
2 changed files with 10 additions and 6 deletions
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3
fs/ext4/fast_commit.c
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@@ -917,7 +917,8 @@ static int ext4_fc_write_inode_data(struct inode *inode, u32 *crc)
while (cur_lblk_off <= new_blk_size) {
map.m_lblk = cur_lblk_off;
map.m_len = new_blk_size - cur_lblk_off + 1;
ret = ext4_map_blocks(NULL, inode, &map, 0);
ret = ext4_map_blocks(NULL, inode, &map,
EXT4_GET_BLOCKS_IO_SUBMIT);
if (ret < 0)
return -ECANCELED;