ext4: fix fdatasync(2) after extent manipulation operations
commitsteinar/wifi_calib_4_9_kernel67a7d5f561
upstream. Currently, extent manipulation operations such as hole punch, range zeroing, or extent shifting do not record the fact that file data has changed and thus fdatasync(2) has a work to do. As a result if we crash e.g. after a punch hole and fdatasync, user can still possibly see the punched out data after journal replay. Test generic/392 fails due to these problems. Fix the problem by properly marking that file data has changed in these operations. Fixes:a4bb6b64e3
Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
parent
2e16921d17
commit
c404f0dee7
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@ -4887,6 +4887,8 @@ static long ext4_zero_range(struct file *file, loff_t offset,
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/* Zero out partial block at the edges of the range */
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ret = ext4_zero_partial_blocks(handle, inode, offset, len);
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if (ret >= 0)
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ext4_update_inode_fsync_trans(handle, inode, 1);
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if (file->f_flags & O_SYNC)
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ext4_handle_sync(handle);
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@ -5573,6 +5575,7 @@ int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len)
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ext4_handle_sync(handle);
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inode->i_mtime = inode->i_ctime = ext4_current_time(inode);
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ext4_mark_inode_dirty(handle, inode);
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ext4_update_inode_fsync_trans(handle, inode, 1);
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out_stop:
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ext4_journal_stop(handle);
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@ -5746,6 +5749,8 @@ int ext4_insert_range(struct inode *inode, loff_t offset, loff_t len)
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up_write(&EXT4_I(inode)->i_data_sem);
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if (IS_SYNC(inode))
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ext4_handle_sync(handle);
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if (ret >= 0)
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ext4_update_inode_fsync_trans(handle, inode, 1);
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out_stop:
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ext4_journal_stop(handle);
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@ -4044,6 +4044,8 @@ int ext4_punch_hole(struct inode *inode, loff_t offset, loff_t length)
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inode->i_mtime = inode->i_ctime = ext4_current_time(inode);
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ext4_mark_inode_dirty(handle, inode);
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if (ret >= 0)
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ext4_update_inode_fsync_trans(handle, inode, 1);
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out_stop:
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ext4_journal_stop(handle);
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out_dio:
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