From 53fdcf992d616484d388a8ab9dad07dc8b8f1178 Mon Sep 17 00:00:00 2001 From: Lukas Czerner <lczerner@redhat.com> Date: Wed, 27 Oct 2010 21:30:04 -0400 Subject: [PATCH] ext4: don't hold spinlock while calling ext4_issue_discard() We can't hold the block group spinlock because we ext4_issue_discard() calls wait and hence can get rescheduled. Google-Bug-Id: 3017678 Signed-off-by: Lukas Czerner <lczerner@redhat.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> --- fs/ext4/mballoc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index 53472e27b327..ccdfec6acb75 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -4696,12 +4696,12 @@ void ext4_free_blocks(handle_t *handle, struct inode *inode, * with group lock held. generate_buddy look at * them with group lock_held */ + if (test_opt(sb, DISCARD)) + ext4_issue_discard(sb, block_group, bit, count); ext4_lock_group(sb, block_group); mb_clear_bits(bitmap_bh->b_data, bit, count); mb_free_blocks(inode, &e4b, bit, count); ext4_mb_return_to_preallocation(inode, &e4b, block, count); - if (test_opt(sb, DISCARD)) - ext4_issue_discard(sb, block_group, bit, count); } ret = ext4_free_blks_count(sb, gdp) + count; -- GitLab