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ext4: improve ext_debug() msg in case of block allocation failure

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ext4_map_blocks() has ext_debug msg early at the start of function.
We also get ext_debug msg if we could allocate a block from
ext4_ext_map_blocks(). But there is no ext_debug() msg in case of
block allocation failure. So add one along with error code.

Also add more info in ext_debug() msg like how many blocks were allocated
v/s how many were requested in ext4_ext_map_blocks().

Signed-off-by: Ritesh Harjani <riteshh@linux.ibm.com>
Link: https://lore.kernel.org/r/1610ec2aa932396be00f9d552fe29da473ead176.1589086800.git.riteshh@linux.ibm.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Ritesh Harjani 2020-05-10 11:54:52 +05:30 committed by Theodore Ts'o
parent 6db0746189
commit ec8c60be96
2 changed files with 6 additions and 2 deletions
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4
fs/ext4/extents.c
View File

@ -4246,10 +4246,10 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
newblock = ext4_mb_new_blocks(handle, &ar, &err);
if (!newblock)
goto out2;
ext_debug("allocate new block: goal %llu, found %llu/%u\n",
ar.goal, newblock, allocated);
allocated_clusters = ar.len;
ar.len = EXT4_C2B(sbi, ar.len) - offset;
ext_debug("allocate new block: goal %llu, found %llu/%u, requested %u\n",
ar.goal, newblock, ar.len, allocated);
if (ar.len > allocated)
ar.len = allocated;

4
fs/ext4/inode.c
View File

@ -732,6 +732,10 @@ out_sem:
return ret;
}
}
if (retval < 0)
ext_debug("failed for inode %lu with err %d\n",
inode->i_ino, retval);
return retval;
}