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Date: Wed, 16 Feb 2022 12:32:49 +0530 From: Ritesh Harjani <riteshh@...ux.ibm.com> To: linux-ext4@...r.kernel.org Cc: Jan Kara <jack@...e.cz>, "Theodore Ts'o" <tytso@....edu>, Andreas Dilger <adilger.kernel@...ger.ca>, Harshad Shirwadkar <harshadshirwadkar@...il.com>, linux-fsdevel@...r.kernel.org, Ritesh Harjani <riteshh@...ux.ibm.com> Subject: [PATCHv2 7/9] 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@...e.cz> Signed-off-by: Ritesh Harjani <riteshh@...ux.ibm.com> --- fs/ext4/block_validity.c | 26 +++++++++++++++++--------- fs/ext4/ext4.h | 3 +++ 2 files changed, 20 insertions(+), 9 deletions(-) diff --git a/fs/ext4/block_validity.c b/fs/ext4/block_validity.c index 4666b55b736e..5504f72bbbbe 100644 --- a/fs/ext4/block_validity.c +++ b/fs/ext4/block_validity.c @@ -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) { diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 97c85ae185a9..0d4f284c0514 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -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; -- 2.31.1
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