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Wed, 12 Mar 2025 11:12:18 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id MjyRKhJs0WccNgAAD6G6ig (envelope-from ); Wed, 12 Mar 2025 11:12:18 +0000 From: David Sterba To: linux-btrfs@vger.kernel.org Cc: David Sterba Subject: [PATCH v2 1/6] btrfs: extend trim callchains to pass the operation type Date: Wed, 12 Mar 2025 12:12:18 +0100 Message-ID: <713849f40a6ec90dce4732a8f69153033952c323.1741777050.git.dsterba@suse.com> X-Mailer: git-send-email 2.47.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-btrfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Spam-Score: -2.80 X-Spamd-Result: default: False [-2.80 / 50.00]; BAYES_HAM(-3.00)[100.00%]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_MISSING_CHARSET(0.50)[]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; RCPT_COUNT_TWO(0.00)[2]; RCVD_VIA_SMTP_AUTH(0.00)[]; MIME_TRACE(0.00)[0:+]; ARC_NA(0.00)[]; DKIM_SIGNED(0.00)[suse.com:s=susede1]; FUZZY_BLOCKED(0.00)[rspamd.com]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.com:mid,suse.com:email,imap1.dmz-prg2.suse.org:helo]; RCVD_TLS_ALL(0.00)[] X-Spam-Flag: NO X-Spam-Level: Preparatory work for more than trim/discard operation that can be performed on the unused space from an ioctl. As FITRIM is not extensible, we'll need a new one. Now we extend any caller that takes part in the trim/discard to take one parameter defining the type of operation. The operation multiplexer btrfs_issue_clear_op() will be extended in followup patches. Signed-off-by: David Sterba --- fs/btrfs/discard.c | 4 +-- fs/btrfs/extent-tree.c | 51 +++++++++++++++++++++++-------------- fs/btrfs/extent-tree.h | 3 ++- fs/btrfs/free-space-cache.c | 29 +++++++++++---------- fs/btrfs/free-space-cache.h | 8 +++--- fs/btrfs/inode.c | 2 +- fs/btrfs/volumes.c | 3 ++- include/uapi/linux/btrfs.h | 8 ++++++ 8 files changed, 68 insertions(+), 40 deletions(-) diff --git a/fs/btrfs/discard.c b/fs/btrfs/discard.c index d6eef4bd9e9d..4515548b107b 100644 --- a/fs/btrfs/discard.c +++ b/fs/btrfs/discard.c @@ -524,13 +524,13 @@ static void btrfs_discard_workfn(struct work_struct *work) btrfs_trim_block_group_bitmaps(block_group, &trimmed, block_group->discard_cursor, btrfs_block_group_end(block_group), - minlen, maxlen, true); + minlen, maxlen, true, BTRFS_CLEAR_OP_DISCARD); discard_ctl->discard_bitmap_bytes += trimmed; } else { btrfs_trim_block_group_extents(block_group, &trimmed, block_group->discard_cursor, btrfs_block_group_end(block_group), - minlen, true); + minlen, true, BTRFS_CLEAR_OP_DISCARD); discard_ctl->discard_extent_bytes += trimmed; } diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 957230abd827..dcc16ca91f11 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -1247,8 +1247,20 @@ static int remove_extent_backref(struct btrfs_trans_handle *trans, return ret; } +static int btrfs_issue_clear_op(struct block_device *bdev, u64 start, u64 size, + enum btrfs_clear_op_type clear) +{ + switch (clear) { + case BTRFS_CLEAR_OP_DISCARD: + return blkdev_issue_discard(bdev, start >> SECTOR_SHIFT, + size >> SECTOR_SHIFT, GFP_NOFS); + default: + return -EOPNOTSUPP; + } +} + static int btrfs_issue_discard(struct block_device *bdev, u64 start, u64 len, - u64 *discarded_bytes) + u64 *discarded_bytes, enum btrfs_clear_op_type clear) { int j, ret = 0; u64 bytes_left, end; @@ -1293,11 +1305,8 @@ static int btrfs_issue_discard(struct block_device *bdev, u64 start, u64 len, bytes_left = end - start; continue; } - if (size) { - ret = blkdev_issue_discard(bdev, start >> SECTOR_SHIFT, - size >> SECTOR_SHIFT, - GFP_NOFS); + ret = btrfs_issue_clear_op(bdev, start, size, clear); if (!ret) *discarded_bytes += size; else if (ret != -EOPNOTSUPP) @@ -1315,9 +1324,7 @@ static int btrfs_issue_discard(struct block_device *bdev, u64 start, u64 len, while (bytes_left) { u64 bytes_to_discard = min(BTRFS_MAX_DISCARD_CHUNK_SIZE, bytes_left); - ret = blkdev_issue_discard(bdev, start >> SECTOR_SHIFT, - bytes_to_discard >> SECTOR_SHIFT, - GFP_NOFS); + ret = btrfs_issue_clear_op(bdev, start, bytes_left, clear); if (ret) { if (ret != -EOPNOTSUPP) @@ -1338,7 +1345,8 @@ static int btrfs_issue_discard(struct block_device *bdev, u64 start, u64 len, return ret; } -static int do_discard_extent(struct btrfs_discard_stripe *stripe, u64 *bytes) +static int do_discard_extent(struct btrfs_discard_stripe *stripe, u64 *bytes, + enum btrfs_clear_op_type clear) { struct btrfs_device *dev = stripe->dev; struct btrfs_fs_info *fs_info = dev->fs_info; @@ -1367,7 +1375,7 @@ static int do_discard_extent(struct btrfs_discard_stripe *stripe, u64 *bytes) &discarded); discarded += src_disc; } else if (bdev_max_discard_sectors(stripe->dev->bdev)) { - ret = btrfs_issue_discard(dev->bdev, phys, len, &discarded); + ret = btrfs_issue_discard(dev->bdev, phys, len, &discarded, clear); } else { ret = 0; *bytes = 0; @@ -1379,7 +1387,8 @@ static int do_discard_extent(struct btrfs_discard_stripe *stripe, u64 *bytes) } int btrfs_discard_extent(struct btrfs_fs_info *fs_info, u64 bytenr, - u64 num_bytes, u64 *actual_bytes) + u64 num_bytes, u64 *actual_bytes, + enum btrfs_clear_op_type clear) { int ret = 0; u64 discarded_bytes = 0; @@ -1418,7 +1427,7 @@ int btrfs_discard_extent(struct btrfs_fs_info *fs_info, u64 bytenr, &stripe->dev->dev_state)) continue; - ret = do_discard_extent(stripe, &bytes); + ret = do_discard_extent(stripe, &bytes, clear); if (ret) { /* * Keep going if discard is not supported by the @@ -2837,7 +2846,8 @@ int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans) if (btrfs_test_opt(fs_info, DISCARD_SYNC)) ret = btrfs_discard_extent(fs_info, start, - end + 1 - start, NULL); + end + 1 - start, NULL, + BTRFS_CLEAR_OP_DISCARD); clear_extent_dirty(unpin, start, end, &cached_state); ret = unpin_extent_range(fs_info, start, end, true); @@ -2866,7 +2876,8 @@ int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans) ret = btrfs_discard_extent(fs_info, block_group->start, block_group->length, - &trimmed); + &trimmed, + BTRFS_CLEAR_OP_DISCARD); /* * Not strictly necessary to lock, as the block_group should be @@ -6368,7 +6379,8 @@ void btrfs_error_unpin_extent_range(struct btrfs_fs_info *fs_info, u64 start, u6 * it while performing the free space search since we have already * held back allocations. */ -static int btrfs_trim_free_extents(struct btrfs_device *device, u64 *trimmed) +static int btrfs_trim_free_extents(struct btrfs_device *device, u64 *trimmed, + enum btrfs_clear_op_type clear) { u64 start = BTRFS_DEVICE_RANGE_RESERVED, len = 0, end = 0; int ret; @@ -6433,8 +6445,7 @@ static int btrfs_trim_free_extents(struct btrfs_device *device, u64 *trimmed) break; } - ret = btrfs_issue_discard(device->bdev, start, len, - &bytes); + ret = btrfs_issue_discard(device->bdev, start, len, &bytes, clear); if (!ret) set_extent_bit(&device->alloc_state, start, start + bytes - 1, CHUNK_TRIMMED, NULL); @@ -6516,7 +6527,8 @@ int btrfs_trim_fs(struct btrfs_fs_info *fs_info, struct fstrim_range *range) &group_trimmed, start, end, - range->minlen); + range->minlen, + BTRFS_CLEAR_OP_DISCARD); trimmed += group_trimmed; if (ret) { @@ -6537,7 +6549,8 @@ int btrfs_trim_fs(struct btrfs_fs_info *fs_info, struct fstrim_range *range) if (test_bit(BTRFS_DEV_STATE_MISSING, &device->dev_state)) continue; - ret = btrfs_trim_free_extents(device, &group_trimmed); + ret = btrfs_trim_free_extents(device, &group_trimmed, + BTRFS_CLEAR_OP_DISCARD); trimmed += group_trimmed; if (ret) { diff --git a/fs/btrfs/extent-tree.h b/fs/btrfs/extent-tree.h index 0ed682d9ed7b..c8e1a30309ab 100644 --- a/fs/btrfs/extent-tree.h +++ b/fs/btrfs/extent-tree.h @@ -163,7 +163,8 @@ int btrfs_drop_subtree(struct btrfs_trans_handle *trans, struct extent_buffer *parent); void btrfs_error_unpin_extent_range(struct btrfs_fs_info *fs_info, u64 start, u64 end); int btrfs_discard_extent(struct btrfs_fs_info *fs_info, u64 bytenr, - u64 num_bytes, u64 *actual_bytes); + u64 num_bytes, u64 *actual_bytes, + enum btrfs_clear_op_type clear); int btrfs_trim_fs(struct btrfs_fs_info *fs_info, struct fstrim_range *range); #endif diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c index 05e173311c1a..05066cf485d0 100644 --- a/fs/btrfs/free-space-cache.c +++ b/fs/btrfs/free-space-cache.c @@ -3652,7 +3652,8 @@ static int do_trimming(struct btrfs_block_group *block_group, u64 *total_trimmed, u64 start, u64 bytes, u64 reserved_start, u64 reserved_bytes, enum btrfs_trim_state reserved_trim_state, - struct btrfs_trim_range *trim_entry) + struct btrfs_trim_range *trim_entry, + enum btrfs_clear_op_type clear) { struct btrfs_space_info *space_info = block_group->space_info; struct btrfs_fs_info *fs_info = block_group->fs_info; @@ -3674,7 +3675,7 @@ static int do_trimming(struct btrfs_block_group *block_group, spin_unlock(&block_group->lock); spin_unlock(&space_info->lock); - ret = btrfs_discard_extent(fs_info, start, bytes, &trimmed); + ret = btrfs_discard_extent(fs_info, start, bytes, &trimmed, clear); if (!ret) { *total_trimmed += trimmed; trim_state = BTRFS_TRIM_STATE_TRIMMED; @@ -3711,7 +3712,7 @@ static int do_trimming(struct btrfs_block_group *block_group, */ static int trim_no_bitmap(struct btrfs_block_group *block_group, u64 *total_trimmed, u64 start, u64 end, u64 minlen, - bool async) + bool async, enum btrfs_clear_op_type clear) { struct btrfs_discard_ctl *discard_ctl = &block_group->fs_info->discard_ctl; @@ -3800,7 +3801,7 @@ static int trim_no_bitmap(struct btrfs_block_group *block_group, ret = do_trimming(block_group, total_trimmed, start, bytes, extent_start, extent_bytes, extent_trim_state, - &trim_entry); + &trim_entry, clear); if (ret) { block_group->discard_cursor = start + bytes; break; @@ -3877,7 +3878,7 @@ static void end_trimming_bitmap(struct btrfs_free_space_ctl *ctl, */ static int trim_bitmaps(struct btrfs_block_group *block_group, u64 *total_trimmed, u64 start, u64 end, u64 minlen, - u64 maxlen, bool async) + u64 maxlen, bool async, enum btrfs_clear_op_type clear) { struct btrfs_discard_ctl *discard_ctl = &block_group->fs_info->discard_ctl; @@ -3986,7 +3987,7 @@ static int trim_bitmaps(struct btrfs_block_group *block_group, mutex_unlock(&ctl->cache_writeout_mutex); ret = do_trimming(block_group, total_trimmed, start, bytes, - start, bytes, 0, &trim_entry); + start, bytes, 0, &trim_entry, clear); if (ret) { reset_trimming_bitmap(ctl, offset); block_group->discard_cursor = @@ -4020,7 +4021,8 @@ static int trim_bitmaps(struct btrfs_block_group *block_group, } int btrfs_trim_block_group(struct btrfs_block_group *block_group, - u64 *trimmed, u64 start, u64 end, u64 minlen) + u64 *trimmed, u64 start, u64 end, u64 minlen, + enum btrfs_clear_op_type clear) { struct btrfs_free_space_ctl *ctl = block_group->free_space_ctl; int ret; @@ -4038,11 +4040,11 @@ int btrfs_trim_block_group(struct btrfs_block_group *block_group, btrfs_freeze_block_group(block_group); spin_unlock(&block_group->lock); - ret = trim_no_bitmap(block_group, trimmed, start, end, minlen, false); + ret = trim_no_bitmap(block_group, trimmed, start, end, minlen, false, clear); if (ret) goto out; - ret = trim_bitmaps(block_group, trimmed, start, end, minlen, 0, false); + ret = trim_bitmaps(block_group, trimmed, start, end, minlen, 0, false, clear); div64_u64_rem(end, BITS_PER_BITMAP * ctl->unit, &rem); /* If we ended in the middle of a bitmap, reset the trimming flag */ if (rem) @@ -4054,7 +4056,7 @@ int btrfs_trim_block_group(struct btrfs_block_group *block_group, int btrfs_trim_block_group_extents(struct btrfs_block_group *block_group, u64 *trimmed, u64 start, u64 end, u64 minlen, - bool async) + bool async, enum btrfs_clear_op_type clear) { int ret; @@ -4068,7 +4070,7 @@ int btrfs_trim_block_group_extents(struct btrfs_block_group *block_group, btrfs_freeze_block_group(block_group); spin_unlock(&block_group->lock); - ret = trim_no_bitmap(block_group, trimmed, start, end, minlen, async); + ret = trim_no_bitmap(block_group, trimmed, start, end, minlen, async, clear); btrfs_unfreeze_block_group(block_group); return ret; @@ -4076,7 +4078,8 @@ int btrfs_trim_block_group_extents(struct btrfs_block_group *block_group, int btrfs_trim_block_group_bitmaps(struct btrfs_block_group *block_group, u64 *trimmed, u64 start, u64 end, u64 minlen, - u64 maxlen, bool async) + u64 maxlen, bool async, + enum btrfs_clear_op_type clear) { int ret; @@ -4091,7 +4094,7 @@ int btrfs_trim_block_group_bitmaps(struct btrfs_block_group *block_group, spin_unlock(&block_group->lock); ret = trim_bitmaps(block_group, trimmed, start, end, minlen, maxlen, - async); + async, clear); btrfs_unfreeze_block_group(block_group); diff --git a/fs/btrfs/free-space-cache.h b/fs/btrfs/free-space-cache.h index 9f1dbfdee8ca..c4c2e5571355 100644 --- a/fs/btrfs/free-space-cache.h +++ b/fs/btrfs/free-space-cache.h @@ -159,13 +159,15 @@ void btrfs_return_cluster_to_free_space( struct btrfs_block_group *block_group, struct btrfs_free_cluster *cluster); int btrfs_trim_block_group(struct btrfs_block_group *block_group, - u64 *trimmed, u64 start, u64 end, u64 minlen); + u64 *trimmed, u64 start, u64 end, u64 minlen, + enum btrfs_clear_op_type clear); int btrfs_trim_block_group_extents(struct btrfs_block_group *block_group, u64 *trimmed, u64 start, u64 end, u64 minlen, - bool async); + bool async, enum btrfs_clear_op_type clear); int btrfs_trim_block_group_bitmaps(struct btrfs_block_group *block_group, u64 *trimmed, u64 start, u64 end, u64 minlen, - u64 maxlen, bool async); + u64 maxlen, bool async, + enum btrfs_clear_op_type clear); bool btrfs_free_space_cache_v1_active(struct btrfs_fs_info *fs_info); int btrfs_set_free_space_cache_v1_active(struct btrfs_fs_info *fs_info, bool active); diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index b4efd0c00f21..4c368e1516b8 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -3307,7 +3307,7 @@ int btrfs_finish_one_ordered(struct btrfs_ordered_extent *ordered_extent) btrfs_discard_extent(fs_info, ordered_extent->disk_bytenr, ordered_extent->disk_num_bytes, - NULL); + NULL, BTRFS_CLEAR_OP_DISCARD); btrfs_free_reserved_extent(fs_info, ordered_extent->disk_bytenr, ordered_extent->disk_num_bytes, 1); diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index e6761ccd8187..f1b1d7446b20 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -3534,7 +3534,8 @@ int btrfs_relocate_chunk(struct btrfs_fs_info *fs_info, u64 chunk_offset) * filesystem's point of view. */ if (btrfs_is_zoned(fs_info)) { - ret = btrfs_discard_extent(fs_info, chunk_offset, length, NULL); + ret = btrfs_discard_extent(fs_info, chunk_offset, length, NULL, + BTRFS_CLEAR_OP_DISCARD); if (ret) btrfs_info(fs_info, "failed to reset zone %llu after relocation", diff --git a/include/uapi/linux/btrfs.h b/include/uapi/linux/btrfs.h index dd02160015b2..aab7fac56d32 100644 --- a/include/uapi/linux/btrfs.h +++ b/include/uapi/linux/btrfs.h @@ -1096,6 +1096,14 @@ enum btrfs_err_code { BTRFS_ERROR_DEV_RAID1C4_MIN_NOT_MET, }; +/* + * Type of operation that will be used to clear unused blocks. + */ +enum btrfs_clear_op_type { + BTRFS_CLEAR_OP_DISCARD, + BTRFS_NR_CLEAR_OP_TYPES, +}; + #define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \ struct btrfs_ioctl_vol_args) #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \