diff options
| author | Chi Zhiling <chizhiling@kylinos.cn> | 2025-08-15 17:32:45 +0800 |
|---|---|---|
| committer | Namjae Jeon <linkinjeon@kernel.org> | 2025-09-30 13:34:42 +0900 |
| commit | 6dfba108387bf4e71411b3da90b2d5cce48ba054 (patch) | |
| tree | 12bcaaf9d84d0f5e484680de1ccd4327ad6f6198 /scripts/patch-kernel | |
| parent | 30d4efb2f5a515a60fe6b0ca85362cbebea21e2f (diff) | |
exfat: limit log print for IO error
For exFAT filesystems with 4MB read_ahead_size, removing the storage device
when the read operation is in progress, which cause the last read syscall
spent 150s [1]. The main reason is that exFAT generates excessive log
messages [2].
After applying this patch, approximately 300,000 lines of log messages
were suppressed, and the delay of the last read() syscall was reduced
to about 4 seconds.
[1]:
write(5, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 131072) = 131072 <0.000120>
read(4, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 131072) = 131072 <0.000032>
write(5, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 131072) = 131072 <0.000119>
read(4, 0x7fccf28ae000, 131072) = -1 EIO (Input/output error) <150.186215>
[2]:
[ 333.696603] exFAT-fs (vdb): error, failed to access to FAT (entry 0x0000d780, err:-5)
[ 333.697378] exFAT-fs (vdb): error, failed to access to FAT (entry 0x0000d780, err:-5)
[ 333.698156] exFAT-fs (vdb): error, failed to access to FAT (entry 0x0000d780, err:-5)
Signed-off-by: Chi Zhiling <chizhiling@kylinos.cn>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Diffstat (limited to 'scripts/patch-kernel')
0 files changed, 0 insertions, 0 deletions