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ext4: Rename and document EXT4_EX_FILTER to EXT4_EX_QUERY_FILTER

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Rename EXT4_EX_FILTER to EXT4_EX_QUERY_FILTER to better describe its
purpose as a filter mask used specifically in ext4_map_query_blocks().
Add a comment explaining that this macro is used to filter flags needed
when querying the on-disk extent tree.

We will later use EXT4_EX_QUERY_FILTER mask to add another
EXT4_GET_BLOCKS_QUERY needed to lookup in on-disk extent tree.

Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Link: https://patch.msgid.link/51f05d0ba286372eb8693af95bd4b10194b53141.1747677758.git.ritesh.list@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Ritesh Harjani (IBM) 2025-05-19 23:49:28 +05:30 committed by Theodore Ts'o
parent 797ac3ca24
commit 9597376bdb
2 changed files with 7 additions and 2 deletions
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7
fs/ext4/ext4.h
View File

@ -757,7 +757,12 @@ enum {
#define EXT4_EX_NOCACHE 0x40000000
#define EXT4_EX_FORCE_CACHE 0x20000000
#define EXT4_EX_NOFAIL 0x10000000
#define EXT4_EX_FILTER 0x70000000
/*
* ext4_map_query_blocks() uses this filter mask to filter the flags needed to
* pass while lookup/querying of on disk extent tree.
*/
#define EXT4_EX_QUERY_FILTER (EXT4_EX_NOCACHE | EXT4_EX_FORCE_CACHE |\
EXT4_EX_NOFAIL)
/*
* Flags used by ext4_free_blocks

2
fs/ext4/inode.c
View File

@ -546,7 +546,7 @@ static int ext4_map_query_blocks(handle_t *handle, struct inode *inode,
unsigned int orig_mlen = map->m_len;
unsigned int query_flags = flags & EXT4_GET_BLOCKS_QUERY_LAST_IN_LEAF;
flags &= EXT4_EX_FILTER;
flags &= EXT4_EX_QUERY_FILTER;
if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))
retval = ext4_ext_map_blocks(handle, inode, map,
flags | query_flags);