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ext4: factor out ext4_get_maxbytes()

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There are several locations that get the correct maxbytes value based on
the inode's block type. It would be beneficial to extract a common
helper function to make the code more clear.

Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Baokun Li <libaokun1@huawei.com>
Link: https://patch.msgid.link/20250506012009.3896990-3-yi.zhang@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
This commit is contained in:
Zhang Yi 2025-05-06 09:20:08 +08:00 committed by Theodore Ts'o
parent 29ec9bed23
commit dbe27f06fa
3 changed files with 9 additions and 12 deletions
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7
fs/ext4/ext4.h
View File

@ -3395,6 +3395,13 @@ static inline unsigned int ext4_flex_bg_size(struct ext4_sb_info *sbi)
return 1 << sbi->s_log_groups_per_flex;
}
static inline loff_t ext4_get_maxbytes(struct inode *inode)
{
if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))
return inode->i_sb->s_maxbytes;
return EXT4_SB(inode->i_sb)->s_bitmap_maxbytes;
}
#define ext4_std_error(sb, errno) \
do { \
if ((errno)) \

7
fs/ext4/extents.c
View File

@ -4941,12 +4941,7 @@ static const struct iomap_ops ext4_iomap_xattr_ops = {
static int ext4_fiemap_check_ranges(struct inode *inode, u64 start, u64 *len)
{
u64 maxbytes;
if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))
maxbytes = inode->i_sb->s_maxbytes;
else
maxbytes = EXT4_SB(inode->i_sb)->s_bitmap_maxbytes;
u64 maxbytes = ext4_get_maxbytes(inode);
if (*len == 0)
return -EINVAL;

7
fs/ext4/file.c
View File

@ -929,12 +929,7 @@ static int ext4_file_open(struct inode *inode, struct file *filp)
loff_t ext4_llseek(struct file *file, loff_t offset, int whence)
{
struct inode *inode = file->f_mapping->host;
loff_t maxbytes;
if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)))
maxbytes = EXT4_SB(inode->i_sb)->s_bitmap_maxbytes;
else
maxbytes = inode->i_sb->s_maxbytes;
loff_t maxbytes = ext4_get_maxbytes(inode);
switch (whence) {
default: