Commit 1c972b1d authored by Ritesh Harjani (IBM)'s avatar Ritesh Harjani (IBM) Committed by Theodore Ts'o
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ext4: Check if inode uses extents in ext4_inode_can_atomic_write() 



EXT4 only supports doing atomic write on inodes which uses extents, so
add a check in ext4_inode_can_atomic_write() which gets called during
open.

Reviewed-by: default avatarOjaswin Mujoo <ojaswin@linux.ibm.com>
Acked-by: default avatarDarrick J. Wong <djwong@kernel.org>
Signed-off-by: default avatarRitesh Harjani (IBM) <ritesh.list@gmail.com>
Link: https://patch.msgid.link/86bb502c979398a736ab371d8f35f6866a477f6c.1747337952.git.ritesh.list@gmail.com


Signed-off-by: default avatarTheodore Ts'o <tytso@mit.edu>
parent 9fa61216

fs/ext4/ext4.h

+3 −1
Original line number Diff line number Diff line
@@ -3870,7 +3870,9 @@ static inline int ext4_buffer_uptodate(struct buffer_head *bh) 
static inline bool ext4_inode_can_atomic_write(struct inode *inode)

{



	return S_ISREG(inode->i_mode) && EXT4_SB(inode->i_sb)->s_awu_min > 0;

	return S_ISREG(inode->i_mode) &&

		ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS) &&

		EXT4_SB(inode->i_sb)->s_awu_min > 0;

}



extern int ext4_block_write_begin(handle_t *handle, struct folio *folio,