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| author | Theodore Ts'o <tytso@mit.edu> | 2019-11-19 21:54:15 -0500 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2019-12-26 11:28:23 -0500 |
| commit | 878520ac45f9f698432d4276db3d9144b83931b6 (patch) | |
| tree | 4d2eb8c8fd49bd852ca2be77e53798fa4b19dbdd /fs/ext4/mmp.c | |
| parent | a562c687d115fe5a90be1e27745cc771c1e6cbd9 (diff) | |
| download | linux-stable-878520ac45f9f698432d4276db3d9144b83931b6.tar.gz linux-stable-878520ac45f9f698432d4276db3d9144b83931b6.tar.bz2 linux-stable-878520ac45f9f698432d4276db3d9144b83931b6.zip | |
ext4: save the error code which triggered an ext4_error() in the superblock
This allows the cause of an ext4_error() report to be categorized
based on whether it was triggered due to an I/O error, or an memory
allocation error, or other possible causes. Most errors are caused by
a detected file system inconsistency, so the default code stored in
the superblock will be EXT4_ERR_EFSCORRUPTED.
Link: https://lore.kernel.org/r/20191204032335.7683-1-tytso@mit.edu
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/mmp.c')
| -rw-r--r-- | fs/ext4/mmp.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/ext4/mmp.c b/fs/ext4/mmp.c index 2305b4374fd3..1c44b1a32001 100644 --- a/fs/ext4/mmp.c +++ b/fs/ext4/mmp.c @@ -173,8 +173,10 @@ static int kmmpd(void *data) * (s_mmp_update_interval * 60) seconds. */ if (retval) { - if ((failed_writes % 60) == 0) + if ((failed_writes % 60) == 0) { + ext4_set_errno(sb, -retval); ext4_error(sb, "Error writing to MMP block"); + } failed_writes++; } @@ -205,6 +207,7 @@ static int kmmpd(void *data) retval = read_mmp_block(sb, &bh_check, mmp_block); if (retval) { + ext4_set_errno(sb, -retval); ext4_error(sb, "error reading MMP data: %d", retval); goto exit_thread; @@ -218,6 +221,7 @@ static int kmmpd(void *data) "Error while updating MMP info. " "The filesystem seems to have been" " multiply mounted."); + ext4_set_errno(sb, EBUSY); ext4_error(sb, "abort"); put_bh(bh_check); retval = -EBUSY; |