search for: bj_shadow

...-scheduling-storm.patch Anyone who is using tasks which have realtime scheduling policy on ext3 systems should apply this change. Details: At the start of do_get_write_access() we have this logic: repeat: lock_buffer(jh->bh); ... unlock_buffer(jh->bh); ... if (jh->j_list == BJ_Shadow) { sleep_on_buffer(jh->bh); goto repeat; } The problem is that the unlock_buffer() will wake up anyone who is sleeping in the sleep_on_buffer(). So if task A is asleep in sleep_on_buffer() and task B now runs do_get_write_access(), task B will wake task A by accident. Task B will then...

...ree" in vmstat never dropped below 1000 with ext2. This is how I solved the 2 ext3 rejects 1) fs/buffer.c @@ -908,9 +933,13 @@ if (buf->b_count) { buf->b_count--; + if (!buf->b_count && + (buf->b_jlist != BJ_None && buf->b_jlist != BJ_Shadow && buf->b_jlis t != BJ_Data)) + J_ASSERT (!test_bit(BH_JWrite, &buf->b_state)); return; } printk("VFS: brelse: Trying to free free buffer\n"); + J_ASSERT(buf->b_count > 0); *(int *)0 = 0; <== This is RH specific, I chose to put...

..._lru:1 cpu:0 on_hash:1 b_count:3 b_blocknr:1 b_jbd:1 b_frozen_data:00000000 b_committed_data:00000000 b_transaction:1 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:0 b_trans_is_comitting:1 b_jcount:0 <0> journal_write_metadata_buffer() [journal.c:466] file as BJ_Shadow b_state:0xb1 b_list:BUF_CLEAN b_jlist:BJ_Metadata on_lru:1 cpu:0 on_hash:1 b_count:3 b_blocknr:1 b_jbd:1 b_frozen_data:00000000 b_committed_data:00000000 b_transaction:1 b_next_transaction:0 b_cp_transaction:0 b_trans_is_running:0 b_trans_is_comitting:1 b_jcount:0 <0>...

..."J_ASSERT(buf->b_count > 0);" before or after " *(int *)0 = 0;"? ===== ext3 0.0.7a patch --- 934,946 ---- if (buf->b_count) { buf->b_count--; + if (!buf->b_count && + (buf->b_jlist != BJ_None && buf->b_jlist != BJ_Shadow && buf->b_jlis t != BJ_Data)) + J_ASSERT (!test_bit(BH_JWrite, &buf->b_state)); return; } printk("VFS: brelse: Trying to free free buffer\n"); + J_ASSERT(buf->b_count > 0); } ===== redhat latest 2.2.19 if (buf->b_count) {...

...buffer types */ +#define BJ_None 0 /* Not journaled */ +#define BJ_Data 1 /* Normal data: flush before commit */ +#define BJ_Metadata 2 /* Normal journaled metadata */ +#define BJ_Forget 3 /* Buffer superceded by this transaction */ +#define BJ_IO 4 /* Buffer is for temporary IO use */ +#define BJ_Shadow 5 /* Buffer contents being shadowed to the log */ +#define BJ_LogCtl 6 /* Buffer contains log descriptors */ +#define BJ_Reserved 7 /* Buffer is reserved for access by journal */ +#define BJ_Types 8 /* * Try to keep the most commonly used fields in single cache lines (16 These two hunks obvi...

The following 6 patches cleanup the jbd code and kill about 200 lines. First of 4 patches can apply to 2.6.13-git8 and 2.6.13-mm2. The rest of them can apply to 2.6.13-mm2. fs/jbd/checkpoint.c | 179 +++++++++++-------------------------------- fs/jbd/commit.c | 101 ++++++++++-------------- fs/jbd/journal.c | 11 +- fs/jbd/revoke.c | 158

Hi, This is the second batch of Ocfs2 patches intended for the merge window. The 1st batch were sent out previously: http://lkml.org/lkml/2008/12/19/280 The bulk of this set is comprised of Jan Kara's patches to add quota support to Ocfs2. Many of the quota patches are to generic code, which I carried to make merging of the Ocfs2 support easier. All of the non-ocfs2 patches should have