From 68cea04f1fb2ead5e10e1be8be98cb1cb24334ba Mon Sep 17 00:00:00 2001 From: Zhang Yi Date: Tue, 6 May 2025 09:20:08 +0800 Subject: [PATCH] ext4: factor out ext4_get_maxbytes() commit dbe27f06fa38b9bfc598f8864ae1c5d5831d9992 upstream. 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 Reviewed-by: Jan Kara Reviewed-by: Baokun Li Link: https://patch.msgid.link/20250506012009.3896990-3-yi.zhang@huaweicloud.com Signed-off-by: Theodore Ts'o Cc: stable@kernel.org Signed-off-by: Greg Kroah-Hartman --- fs/ext4/ext4.h | 7 +++++++ fs/ext4/extents.c | 7 +------ fs/ext4/file.c | 7 +------ 3 files changed, 9 insertions(+), 12 deletions(-) diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 81fe87fcbfa0..b55d5e2abeb3 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -3351,6 +3351,13 @@ 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)) \ diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 824d95c19564..a3d3c9fc6426 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -4970,12 +4970,7 @@ 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; diff --git a/fs/ext4/file.c b/fs/ext4/file.c index c71af675e310..b37e0e4a71bf 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -898,12 +898,7 @@ 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: