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ext4: handle the rest of ext4_mb_load_buddy() ENOMEM errors #63

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Jun 29, 2017
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ext4: handle the rest of ext4_mb_load_buddy() ENOMEM errors #63

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23 changes: 14 additions & 9 deletions fs/ext4/mballoc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -3887,7 +3887,8 @@ ext4_mb_discard_group_preallocations(struct super_block *sb,

err = ext4_mb_load_buddy(sb, group, &e4b);
if (err) {
ext4_error(sb, "Error loading buddy information for %u", group);
ext4_warning(sb, "Error %d loading buddy information for %u",
err, group);
put_bh(bitmap_bh);
return 0;
}
Expand Down Expand Up @@ -4044,10 +4045,11 @@ void ext4_discard_preallocations(struct inode *inode)
BUG_ON(pa->pa_type != MB_INODE_PA);
group = ext4_get_group_number(sb, pa->pa_pstart);

err = ext4_mb_load_buddy(sb, group, &e4b);
err = ext4_mb_load_buddy_gfp(sb, group, &e4b,
GFP_NOFS|__GFP_NOFAIL);
if (err) {
ext4_error(sb, "Error loading buddy information for %u",
group);
ext4_error(sb, "Error %d loading buddy information for %u",
err, group);
continue;
}

Expand Down Expand Up @@ -4303,11 +4305,14 @@ ext4_mb_discard_lg_preallocations(struct super_block *sb,
spin_unlock(&lg->lg_prealloc_lock);

list_for_each_entry_safe(pa, tmp, &discard_list, u.pa_tmp_list) {
int err;

group = ext4_get_group_number(sb, pa->pa_pstart);
if (ext4_mb_load_buddy(sb, group, &e4b)) {
ext4_error(sb, "Error loading buddy information for %u",
group);
err = ext4_mb_load_buddy_gfp(sb, group, &e4b,
GFP_NOFS|__GFP_NOFAIL);
if (err) {
ext4_error(sb, "Error %d loading buddy information for %u",
err, group);
continue;
}
ext4_lock_group(sb, group);
Expand Down Expand Up @@ -5127,8 +5132,8 @@ ext4_trim_all_free(struct super_block *sb, ext4_group_t group,

ret = ext4_mb_load_buddy(sb, group, &e4b);
if (ret) {
ext4_error(sb, "Error in loading buddy "
"information for %u", group);
ext4_warning(sb, "Error %d loading buddy information for %u",
ret, group);
return ret;
}
bitmap = e4b.bd_bitmap;
Expand Down