kernel.git/fs/ext4/indirect.c, branch linux-5.19.y

fs/ext4: fix comments mentioning i_mutex

2022-02-03T15:57:53Z

inode->i_mutex has been replaced with inode->i_rwsem long ago. Fix comments still mentioning i_mutex. Signed-off-by: hongnanli Link: https://lore.kernel.org/r/20220121070611.21618-1-hongnan.li@linux.alibaba.com Signed-off-by: Theodore Ts'o

ext4: Support for checksumming from journal triggers

2021-08-31T03:36:50Z

JBD2 layer support triggers which are called when journaling layer moves buffer to a certain state. We can use the frozen trigger, which gets called when buffer data is frozen and about to be written out to the journal, to compute block checksums for some buffer types (similarly as does ocfs2). This avoids unnecessary repeated recomputation of the checksum (at the cost of larger window where memory corruption won't be caught by checksumming) and is even necessary when there are unsynchronized updaters of the checksummed data. So add superblock and journal trigger type arguments to ext4_journal_get_write_access() and ext4_journal_get_create_access() so that frozen triggers can be set accordingly. Also add inode argument to ext4_walk_page_buffers() and all the callbacks used with that function for the same purpose. This patch is mostly only a change of prototype of the above mentioned functions and a few small helpers. Real checksumming will come later. Reviewed-by: Theodore Ts'o Signed-off-by: Jan Kara Link: https://lore.kernel.org/r/20210816095713.16537-1-jack@suse.cz Signed-off-by: Theodore Ts'o

ext4: fix various seppling typos

2021-04-10T03:14:59Z

Signed-off-by: Bhaskar Chowdhury Link: https://lore.kernel.org/r/cover.1616840203.git.unixbhaskar@gmail.com Signed-off-by: Theodore Ts'o

ext4: use ASSERT() to replace J_ASSERT()

2020-12-03T14:36:57Z

There are currently multiple forms of assertion, such as J_ASSERT(). J_ASEERT() is provided for the jbd module, which is a public module. Maybe we should use custom ASSERT() like other file systems, such as xfs, which would be better. Signed-off-by: Chunguang Xu Reviewed-by: Andreas Dilger Link: https://lore.kernel.org/r/1604764698-4269-1-git-send-email-brookxu@tencent.com Signed-off-by: Theodore Ts'o

ext4: use ext4_sb_bread() instead of sb_bread()

2020-10-18T14:37:14Z

We have already remove open codes that invoke helpers provide by fs/buffer.c in all places reading metadata buffers. This patch switch to use ext4_sb_bread() to replace all sb_bread() helpers, which is ext4_read_bh() helper back end. Signed-off-by: zhangyi (F) Link: https://lore.kernel.org/r/20200924073337.861472-7-yi.zhang@huawei.com Signed-off-by: Theodore Ts'o

ext4: use common helpers in all places reading metadata buffers

2020-10-18T14:37:14Z

Revome all open codes that read metadata buffers, switch to use ext4_read_bh_*() common helpers. Signed-off-by: zhangyi (F) Suggested-by: Jan Kara Link: https://lore.kernel.org/r/20200924073337.861472-4-yi.zhang@huawei.com Signed-off-by: Theodore Ts'o

ext4: add trace exit in exception path.

2020-10-18T14:36:59Z

Missing trace exit in exception path of ext4_sync_file and ext4_ind_map_blocks. Signed-off-by: Zhang Qilong Link: https://lore.kernel.org/r/20200921124738.23352-1-zhangqilong3@huawei.com Signed-off-by: Theodore Ts'o

ext4: delete duplicated words + other fixes

2020-10-18T14:36:13Z

Delete repeated words in fs/ext4/. {the, this, of, we, after} Also change spelling of "xttr" in inline.c to "xattr" in 2 places. Signed-off-by: Randy Dunlap Reviewed-by: Jan Kara Link: https://lore.kernel.org/r/20200805024850.12129-1-rdunlap@infradead.org Signed-off-by: Theodore Ts'o

ext4: limit the length of per-inode prealloc list

2020-08-19T16:04:36Z

In the scenario of writing sparse files, the per-inode prealloc list may be very long, resulting in high overhead for ext4_mb_use_preallocated(). To circumvent this problem, we limit the maximum length of per-inode prealloc list to 512 and allow users to modify it. After patching, we observed that the sys ratio of cpu has dropped, and the system throughput has increased significantly. We created a process to write the sparse file, and the running time of the process on the fixed kernel was significantly reduced, as follows: Running time on unfixed kernel： [root@TENCENT64 ~]# time taskset 0x01 ./sparse /data1/sparce.dat real 0m2.051s user 0m0.008s sys 0m2.026s Running time on fixed kernel： [root@TENCENT64 ~]# time taskset 0x01 ./sparse /data1/sparce.dat real 0m0.471s user 0m0.004s sys 0m0.395s Signed-off-by: Chunguang Xu Link: https://lore.kernel.org/r/d7a98178-056b-6db5-6bce-4ead23f4a257@gmail.com Signed-off-by: Theodore Ts'o

ext4: change to use fallthrough macro

2020-08-18T18:27:40Z

Change to use fallthrough macro in switch case. Signed-off-by: Shijie Luo Reviewed-by: Ritesh Harjani Link: https://lore.kernel.org/r/20200810114435.24182-1-luoshijie1@huawei.com Signed-off-by: Theodore Ts'o