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ext4: add ext4_sb_block_valid() refactored out of ext4_inode_block_valid() 

This API will be needed at places where we don't have an inode
for e.g. while freeing blocks in ext4_group_add_blocks()

Suggested-by: Jan Kara <jack@suse.cz>
Signed-off-by: Ritesh Harjani <riteshh@linux.ibm.com>
Link: https://lore.kernel.org/r/dd34a236543ad5ae7123eeebe0cb69e6bdd44f34.1644992610.git.riteshh@linux.ibm.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Ritesh Harjani 2022-02-16 12:32:49 +05:30 committed by Theodore Ts'o
parent bd8247eee1
commit 6bc6c2bdf1
2 changed files with 20 additions and 9 deletions
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26
fs/ext4/block_validity.c
View File

@ -292,15 +292,10 @@ void ext4_release_system_zone(struct super_block *sb)
call_rcu(&system_blks->rcu, ext4_destroy_system_zone);
}
/*
* Returns 1 if the passed-in block region (start_blk,
* start_blk+count) is valid; 0 if some part of the block region
* overlaps with some other filesystem metadata blocks.
*/
int ext4_inode_block_valid(struct inode *inode, ext4_fsblk_t start_blk,
unsigned int count)
int ext4_sb_block_valid(struct super_block *sb, struct inode *inode,
ext4_fsblk_t start_blk, unsigned int count)
{
struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
struct ext4_sb_info *sbi = EXT4_SB(sb);
struct ext4_system_blocks *system_blks;
struct ext4_system_zone *entry;
struct rb_node *n;
@ -329,7 +324,9 @@ int ext4_inode_block_valid(struct inode *inode, ext4_fsblk_t start_blk,
else if (start_blk >= (entry->start_blk + entry->count))
n = n->rb_right;
else {
ret = (entry->ino == inode->i_ino);
ret = 0;
if (inode)
ret = (entry->ino == inode->i_ino);
break;
}
}
@ -338,6 +335,17 @@ int ext4_inode_block_valid(struct inode *inode, ext4_fsblk_t start_blk,
return ret;
}
/*
* Returns 1 if the passed-in block region (start_blk,
* start_blk+count) is valid; 0 if some part of the block region
* overlaps with some other filesystem metadata blocks.
*/
int ext4_inode_block_valid(struct inode *inode, ext4_fsblk_t start_blk,
unsigned int count)
{
return ext4_sb_block_valid(inode->i_sb, inode, start_blk, count);
}
int ext4_check_blockref(const char *function, unsigned int line,
struct inode *inode, __le32 *p, unsigned int max)
{

3
fs/ext4/ext4.h
View File

@ -3707,6 +3707,9 @@ extern int ext4_inode_block_valid(struct inode *inode,
unsigned int count);
extern int ext4_check_blockref(const char *, unsigned int,
struct inode *, __le32 *, unsigned int);
extern int ext4_sb_block_valid(struct super_block *sb, struct inode *inode,
ext4_fsblk_t start_blk, unsigned int count);
/* extents.c */
struct ext4_ext_path;