From b9ef22dedde08ab1b4ccd5f53344984c4dcb89f4 Mon Sep 17 00:00:00 2001 From: Feifei Xu Date: Wed, 1 Jun 2016 19:18:25 +0800 Subject: Btrfs: self-tests: Support non-4k page size self-tests code assumes 4k as the sectorsize and nodesize. This commit fix hardcoded 4K. Enables the self-tests code to be executed on non-4k page sized systems (e.g. ppc64). Reviewed-by: Josef Bacik Signed-off-by: Feifei Xu Signed-off-by: Chandan Rajendra Signed-off-by: David Sterba --- fs/btrfs/super.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) (limited to 'fs/btrfs/super.c') diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 4e59a91a11e0..5b0b354ca594 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -2319,27 +2319,31 @@ static void btrfs_print_mod_info(void) static int btrfs_run_sanity_tests(void) { int ret; + u32 sectorsize, nodesize; + sectorsize = PAGE_SIZE; + nodesize = PAGE_SIZE; ret = btrfs_init_test_fs(); if (ret) return ret; - ret = btrfs_test_free_space_cache(); + ret = btrfs_test_free_space_cache(sectorsize, nodesize); if (ret) goto out; - ret = btrfs_test_extent_buffer_operations(); + ret = btrfs_test_extent_buffer_operations(sectorsize, + nodesize); if (ret) goto out; - ret = btrfs_test_extent_io(); + ret = btrfs_test_extent_io(sectorsize, nodesize); if (ret) goto out; - ret = btrfs_test_inodes(); + ret = btrfs_test_inodes(sectorsize, nodesize); if (ret) goto out; - ret = btrfs_test_qgroups(); + ret = btrfs_test_qgroups(sectorsize, nodesize); if (ret) goto out; - ret = btrfs_test_free_space_tree(); + ret = btrfs_test_free_space_tree(sectorsize, nodesize); out: btrfs_destroy_test_fs(); return ret; -- cgit From 5f9e1059d9347191b271bf7d13bd83db57594d2a Mon Sep 17 00:00:00 2001 From: Jeff Mahoney Date: Wed, 16 Sep 2015 15:34:53 +0200 Subject: btrfs: advertise which crc32c implementation is being used at module load Since several architectures support hardware-accelerated crc32c calculation, it would be nice to confirm that btrfs is actually using it. We can see an elevated use count for the module, but it doesn't actually show who the users are. This patch simply prints the name of the driver after successfully initializing the shash. Signed-off-by: Jeff Mahoney [ added a helper and used in module load-time message ] Signed-off-by: David Sterba --- fs/btrfs/super.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'fs/btrfs/super.c') diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 4e59a91a11e0..4397a303fc6c 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -2303,7 +2303,7 @@ static void btrfs_interface_exit(void) static void btrfs_print_mod_info(void) { - printk(KERN_INFO "Btrfs loaded" + printk(KERN_INFO "Btrfs loaded, crc32c=%s" #ifdef CONFIG_BTRFS_DEBUG ", debug=on" #endif @@ -2313,7 +2313,8 @@ static void btrfs_print_mod_info(void) #ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY ", integrity-checker=on" #endif - "\n"); + "\n", + btrfs_crc32c_impl()); } static int btrfs_run_sanity_tests(void) -- cgit From d94f43b4c6b88b9393422868d8dfde14c5923858 Mon Sep 17 00:00:00 2001 From: Feifei Xu Date: Wed, 1 Jun 2016 19:18:27 +0800 Subject: Btrfs: self-tests: Support testing all possible sectorsizes and nodesizes To test all possible sectorsizes, this commit adds a sectorsize array. This commit executes the tests for all possible sectorsizes and nodesizes. Reviewed-by: Josef Bacik Signed-off-by: Chandan Rajendra Signed-off-by: Feifei Xu Signed-off-by: David Sterba --- fs/btrfs/super.c | 54 ++++++++++++++++++++++++++++++++---------------------- 1 file changed, 32 insertions(+), 22 deletions(-) (limited to 'fs/btrfs/super.c') diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 5b0b354ca594..c49d7ae69617 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -2318,32 +2318,42 @@ static void btrfs_print_mod_info(void) static int btrfs_run_sanity_tests(void) { - int ret; + int ret, i; u32 sectorsize, nodesize; - - sectorsize = PAGE_SIZE; - nodesize = PAGE_SIZE; + u32 test_sectorsize[] = { + PAGE_SIZE, + }; ret = btrfs_init_test_fs(); if (ret) return ret; - - ret = btrfs_test_free_space_cache(sectorsize, nodesize); - if (ret) - goto out; - ret = btrfs_test_extent_buffer_operations(sectorsize, - nodesize); - if (ret) - goto out; - ret = btrfs_test_extent_io(sectorsize, nodesize); - if (ret) - goto out; - ret = btrfs_test_inodes(sectorsize, nodesize); - if (ret) - goto out; - ret = btrfs_test_qgroups(sectorsize, nodesize); - if (ret) - goto out; - ret = btrfs_test_free_space_tree(sectorsize, nodesize); + for (i = 0; i < ARRAY_SIZE(test_sectorsize); i++) { + sectorsize = test_sectorsize[i]; + for (nodesize = sectorsize; + nodesize <= BTRFS_MAX_METADATA_BLOCKSIZE; + nodesize <<= 1) { + pr_info("BTRFS: selftest: sectorsize: %u nodesize: %u\n", + sectorsize, nodesize); + ret = btrfs_test_free_space_cache(sectorsize, nodesize); + if (ret) + goto out; + ret = btrfs_test_extent_buffer_operations(sectorsize, + nodesize); + if (ret) + goto out; + ret = btrfs_test_extent_io(sectorsize, nodesize); + if (ret) + goto out; + ret = btrfs_test_inodes(sectorsize, nodesize); + if (ret) + goto out; + ret = btrfs_test_qgroups(sectorsize, nodesize); + if (ret) + goto out; + ret = btrfs_test_free_space_tree(sectorsize, nodesize); + if (ret) + goto out; + } + } out: btrfs_destroy_test_fs(); return ret; -- cgit From 64c12921e11b3a0c10d088606e328c58e29274d8 Mon Sep 17 00:00:00 2001 From: Jeff Mahoney Date: Wed, 8 Jun 2016 00:36:38 -0400 Subject: btrfs: account for non-CoW'd blocks in btrfs_abort_transaction The test for !trans->blocks_used in btrfs_abort_transaction is insufficient to determine whether it's safe to drop the transaction handle on the floor. btrfs_cow_block, informed by should_cow_block, can return blocks that have already been CoW'd in the current transaction. trans->blocks_used is only incremented for new block allocations. If an operation overlaps the blocks in the current transaction entirely and must abort the transaction, we'll happily let it clean up the trans handle even though it may have modified the blocks and will commit an incomplete operation. In the long-term, I'd like to do closer tracking of when the fs is actually modified so we can still recover as gracefully as possible, but that approach will need some discussion. In the short term, since this is the only code using trans->blocks_used, let's just switch it to a bool indicating whether any blocks were used and set it when should_cow_block returns false. Cc: stable@vger.kernel.org # 3.4+ Signed-off-by: Jeff Mahoney Reviewed-by: Filipe Manana Signed-off-by: David Sterba --- fs/btrfs/super.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/btrfs/super.c') diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 4339b6613f19..bf70d33b5791 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -235,7 +235,7 @@ void __btrfs_abort_transaction(struct btrfs_trans_handle *trans, trans->aborted = errno; /* Nothing used. The other threads that have joined this * transaction may be able to continue. */ - if (!trans->blocks_used && list_empty(&trans->new_bgs)) { + if (!trans->dirty && list_empty(&trans->new_bgs)) { const char *errstr; errstr = btrfs_decode_error(errno); -- cgit From 90c711ab380d633bf85249bd5d819edb601feda7 Mon Sep 17 00:00:00 2001 From: Zygo Blaxell Date: Sun, 12 Jun 2016 23:39:58 -0400 Subject: btrfs: avoid blocking open_ctree from cleaner_kthread This fixes a problem introduced in commit 2f3165ecf103599f82bf0ea254039db335fb5005 "btrfs: don't force mounts to wait for cleaner_kthread to delete one or more subvolumes". open_ctree eventually calls btrfs_replay_log which in turn calls btrfs_commit_super which tries to lock the cleaner_mutex, causing a recursive mutex deadlock during mount. Instead of playing whack-a-mole trying to keep up with all the functions that may want to lock cleaner_mutex, put all the cleaner_mutex lockers back where they were, and attack the problem more directly: keep cleaner_kthread asleep until the filesystem is mounted. When filesystems are mounted read-only and later remounted read-write, open_ctree did not set fs_info->open and neither does anything else. Set this flag in btrfs_remount so that neither btrfs_delete_unused_bgs nor cleaner_kthread get confused by the common case of "/" filesystem read-only mount followed by read-write remount. Signed-off-by: Zygo Blaxell Reviewed-by: David Sterba Signed-off-by: David Sterba --- fs/btrfs/super.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'fs/btrfs/super.c') diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index bf70d33b5791..60e7179ed4b7 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -1807,6 +1807,8 @@ static int btrfs_remount(struct super_block *sb, int *flags, char *data) } } sb->s_flags &= ~MS_RDONLY; + + fs_info->open = 1; } out: wake_up_process(fs_info->transaction_kthread); -- cgit