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Message-Id: <1357901627-3068-2-git-send-email-wenqing.lz@taobao.com> Date: Fri, 11 Jan 2013 18:53:41 +0800 From: Zheng Liu <gnehzuil.liu@...il.com> To: linux-ext4@...r.kernel.org Cc: Jan kara <jack@...e.cz>, "Theodore Ts'o" <tytso@....edu>, Zheng Liu <wenqing.lz@...bao.com> Subject: [PATCH 1/7 v2] ext4: refine extent status tree From: Zheng Liu <wenqing.lz@...bao.com> This patch tries to refine the extent status tree. A prefix 'es_' is added to make code clearly. CC: Jan kara <jack@...e.cz> CC: "Theodore Ts'o" <tytso@....edu> Signed-off-by: Zheng Liu <wenqing.lz@...bao.com> --- fs/ext4/extents.c | 21 ++-- fs/ext4/extents_status.c | 300 ++++++++++++++++++++++++-------------------- fs/ext4/extents_status.h | 8 +- fs/ext4/file.c | 12 +- include/trace/events/ext4.h | 40 +++--- 5 files changed, 207 insertions(+), 174 deletions(-) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 5ae1674..f7bf616 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -3525,13 +3525,14 @@ static int ext4_find_delalloc_range(struct inode *inode, { struct extent_status es; - es.start = lblk_start; - ext4_es_find_extent(inode, &es); - if (es.len == 0) + es.es_lblk = lblk_start; + (void)ext4_es_find_extent(inode, &es); + if (es.es_len == 0) return 0; /* there is no delay extent in this tree */ - else if (es.start <= lblk_start && lblk_start < es.start + es.len) + else if (es.es_lblk <= lblk_start && + lblk_start < es.es_lblk + es.es_len) return 1; - else if (lblk_start <= es.start && es.start <= lblk_end) + else if (lblk_start <= es.es_lblk && es.es_lblk <= lblk_end) return 1; else return 0; @@ -4567,7 +4568,7 @@ static int ext4_find_delayed_extent(struct inode *inode, struct extent_status es; ext4_lblk_t next_del; - es.start = newex->ec_block; + es.es_lblk = newex->ec_block; next_del = ext4_es_find_extent(inode, &es); if (newex->ec_start == 0) { @@ -4575,18 +4576,18 @@ static int ext4_find_delayed_extent(struct inode *inode, * No extent in extent-tree contains block @newex->ec_start, * then the block may stay in 1)a hole or 2)delayed-extent. */ - if (es.len == 0) + if (es.es_len == 0) /* A hole found. */ return 0; - if (es.start > newex->ec_block) { + if (es.es_lblk > newex->ec_block) { /* A hole found. */ - newex->ec_len = min(es.start - newex->ec_block, + newex->ec_len = min(es.es_lblk - newex->ec_block, newex->ec_len); return 0; } - newex->ec_len = es.start + es.len - newex->ec_block; + newex->ec_len = es.es_lblk + es.es_len - newex->ec_block; } return next_del; diff --git a/fs/ext4/extents_status.c b/fs/ext4/extents_status.c index 564d981..0662369 100644 --- a/fs/ext4/extents_status.c +++ b/fs/ext4/extents_status.c @@ -26,9 +26,10 @@ * extent tree, whose goal is only track delay extent in memory to * simplify the implementation of fiemap and bigalloc, and introduce * lseek SEEK_DATA/SEEK_HOLE support. That is why it is still called - * delay extent tree at the following comment. But for better - * understand what it does, it has been rename to extent status tree. + * delay extent tree at the first commit. But for better understand + * what it does, it has been rename to extent status tree. * + * Step1: * Currently the first step has been done. All delay extents are * tracked in the tree. It maintains the delay extent when a delay * allocation is issued, and the delay extent is written out or @@ -37,26 +38,38 @@ * * The following comment describes the implemenmtation of extent * status tree and future works. + * + * Step2: + * In this step all extent status is tracked by extent status tree. + * Thus, we can first try to lookup a block mapping in this tree before + * find it in extent tree. Unwritten extent conversion also can be + * improved. Currently this conversion need to be done in a workqueue + * because this conversion can not be done in end_io function due to it + * needs to take i_data_sem locking in a irq context. After looking block + * mapping in extent status tree, we can first convert unwritten extent in + * extent status tree, call aio_comlete() and inode_dio_done() in end_io + * function, and don't need to be worried about expose a stale data. + * Meanwhile when dioread_nolock is enabled, reader won't need to wait + * this unwritten extent conversion, and latency also is reduced. */ /* - * extents status tree implementation for ext4. + * Extent status tree implementation for ext4. * * * ========================================================================== - * Extents status encompass delayed extents and extent locks + * Extent status tracks all extent status. * - * 1. Why delayed extent implementation ? + * 1. Why we need to implement extent status tree? * - * Without delayed extent, ext4 identifies a delayed extent by looking + * Without extent status tree, ext4 identifies a delayed extent by looking * up page cache, this has several deficiencies - complicated, buggy, * and inefficient code. * - * FIEMAP, SEEK_HOLE/DATA, bigalloc, punch hole and writeout all need - * to know if a block or a range of blocks are belonged to a delayed - * extent. + * FIEMAP, SEEK_HOLE/DATA, bigalloc, and writeout all need to know if a + * block or a range of blocks are belonged to a delayed extent. * - * Let us have a look at how they do without delayed extents implementation. + * Let us have a look at how they do without extent status tree. * -- FIEMAP * FIEMAP looks up page cache to identify delayed allocations from holes. * @@ -68,47 +81,43 @@ * already under delayed allocation or not to determine whether * quota reserving is needed for the cluster. * - * -- punch hole - * punch hole looks up page cache to identify a delayed extent. - * * -- writeout * Writeout looks up whole page cache to see if a buffer is * mapped, If there are not very many delayed buffers, then it is * time comsuming. * - * With delayed extents implementation, FIEMAP, SEEK_HOLE/DATA, + * With extent status tree implementation, FIEMAP, SEEK_HOLE/DATA, * bigalloc and writeout can figure out if a block or a range of * blocks is under delayed allocation(belonged to a delayed extent) or - * not by searching the delayed extent tree. + * not by searching the extent tree. * * * ========================================================================== - * 2. ext4 delayed extents impelmentation + * 2. Ext4 extent status tree impelmentation * - * -- delayed extent - * A delayed extent is a range of blocks which are contiguous - * logically and under delayed allocation. Unlike extent in - * ext4, delayed extent in ext4 is a in-memory struct, there is - * no corresponding on-disk data. There is no limit on length of - * delayed extent, so a delayed extent can contain as many blocks - * as they are contiguous logically. + * -- extent + * A extent is a range of blocks which are contiguous logically and + * physically. Unlike extent in extent tree, this extent in ext4 is + * a in-memory struct, there is no corresponding on-disk data. There + * is no limit on length of extent, so an extent can contain as many + * blocks as they are contiguous logically and physically. * - * -- delayed extent tree - * Every inode has a delayed extent tree and all under delayed - * allocation blocks are added to the tree as delayed extents. - * Delayed extents in the tree are ordered by logical block no. + * -- extent status tree + * Every inode has an extent status tree and all allocation blocks + * are added to the tree with different status. The extent in the + * tree are ordered by logical block no. * - * -- operations on a delayed extent tree - * There are three operations on a delayed extent tree: find next - * delayed extent, adding a space(a range of blocks) and removing - * a space. + * -- operations on a extent status tree + * There are three important operations on a delayed extent tree: find + * next extent, adding a extent(a range of blocks) and removing a extent. * - * -- race on a delayed extent tree - * Delayed extent tree is protected inode->i_es_lock. + * -- race on a extent status tree + * Extent status tree is protected inode->i_es_lock. * * * ========================================================================== - * 3. performance analysis + * 3. Performance analysis + * * -- overhead * 1. There is a cache extent for write access, so if writes are * not very random, adding space operaions are in O(1) time. @@ -120,15 +129,19 @@ * * ========================================================================== * 4. TODO list - * -- Track all extent status * - * -- Improve get block process + * -- Refactor delayed reserve space * * -- Extent-level locking */ static struct kmem_cache *ext4_es_cachep; +static int __es_insert_extent(struct ext4_es_tree *tree, + struct extent_status *newes); +static int __es_remove_extent(struct ext4_es_tree *tree, ext4_lblk_t lblk, + ext4_lblk_t end); + int __init ext4_init_es(void) { ext4_es_cachep = KMEM_CACHE(extent_status, SLAB_RECLAIM_ACCOUNT); @@ -161,7 +174,7 @@ static void ext4_es_print_tree(struct inode *inode) while (node) { struct extent_status *es; es = rb_entry(node, struct extent_status, rb_node); - printk(KERN_DEBUG " [%u/%u)", es->start, es->len); + printk(KERN_DEBUG " [%u/%u)", es->es_lblk, es->es_len); node = rb_next(node); } printk(KERN_DEBUG "\n"); @@ -172,8 +185,8 @@ static void ext4_es_print_tree(struct inode *inode) static inline ext4_lblk_t extent_status_end(struct extent_status *es) { - BUG_ON(es->start + es->len < es->start); - return es->start + es->len - 1; + BUG_ON(es->es_lblk + es->es_len < es->es_lblk); + return es->es_lblk + es->es_len - 1; } /* @@ -181,25 +194,25 @@ static inline ext4_lblk_t extent_status_end(struct extent_status *es) * it can't be found, try to find next extent. */ static struct extent_status *__es_tree_search(struct rb_root *root, - ext4_lblk_t offset) + ext4_lblk_t lblk) { struct rb_node *node = root->rb_node; struct extent_status *es = NULL; while (node) { es = rb_entry(node, struct extent_status, rb_node); - if (offset < es->start) + if (lblk < es->es_lblk) node = node->rb_left; - else if (offset > extent_status_end(es)) + else if (lblk > extent_status_end(es)) node = node->rb_right; else return es; } - if (es && offset < es->start) + if (es && lblk < es->es_lblk) return es; - if (es && offset > extent_status_end(es)) { + if (es && lblk > extent_status_end(es)) { node = rb_next(&es->rb_node); return node ? rb_entry(node, struct extent_status, rb_node) : NULL; @@ -209,8 +222,8 @@ static struct extent_status *__es_tree_search(struct rb_root *root, } /* - * ext4_es_find_extent: find the 1st delayed extent covering @es->start - * if it exists, otherwise, the next extent after @es->start. + * ext4_es_find_extent: find the 1st delayed extent covering @es->lblk + * if it exists, otherwise, the next extent after @es->lblk. * * @inode: the inode which owns delayed extents * @es: delayed extent that we found @@ -226,7 +239,7 @@ ext4_lblk_t ext4_es_find_extent(struct inode *inode, struct extent_status *es) struct rb_node *node; ext4_lblk_t ret = EXT_MAX_BLOCKS; - trace_ext4_es_find_extent_enter(inode, es->start); + trace_ext4_es_find_extent_enter(inode, es->es_lblk); read_lock(&EXT4_I(inode)->i_es_lock); tree = &EXT4_I(inode)->i_es_tree; @@ -234,25 +247,25 @@ ext4_lblk_t ext4_es_find_extent(struct inode *inode, struct extent_status *es) /* find delay extent in cache firstly */ if (tree->cache_es) { es1 = tree->cache_es; - if (in_range(es->start, es1->start, es1->len)) { + if (in_range(es->es_lblk, es1->es_lblk, es1->es_len)) { es_debug("%u cached by [%u/%u)\n", - es->start, es1->start, es1->len); + es->es_lblk, es1->es_lblk, es1->es_len); goto out; } } - es->len = 0; - es1 = __es_tree_search(&tree->root, es->start); + es->es_len = 0; + es1 = __es_tree_search(&tree->root, es->es_lblk); out: if (es1) { tree->cache_es = es1; - es->start = es1->start; - es->len = es1->len; + es->es_lblk = es1->es_lblk; + es->es_len = es1->es_len; node = rb_next(&es1->rb_node); if (node) { es1 = rb_entry(node, struct extent_status, rb_node); - ret = es1->start; + ret = es1->es_lblk; } } @@ -263,14 +276,14 @@ out: } static struct extent_status * -ext4_es_alloc_extent(ext4_lblk_t start, ext4_lblk_t len) +ext4_es_alloc_extent(ext4_lblk_t lblk, ext4_lblk_t len) { struct extent_status *es; es = kmem_cache_alloc(ext4_es_cachep, GFP_ATOMIC); if (es == NULL) return NULL; - es->start = start; - es->len = len; + es->es_lblk = lblk; + es->es_len = len; return es; } @@ -279,6 +292,20 @@ static void ext4_es_free_extent(struct extent_status *es) kmem_cache_free(ext4_es_cachep, es); } +/* + * Check whether or not two extents can be merged + * Condition: + * - logical block number is contiguous + */ +static int ext4_es_can_be_merged(struct extent_status *es1, + struct extent_status *es2) +{ + if (es1->es_lblk + es1->es_len != es2->es_lblk) + return 0; + + return 1; +} + static struct extent_status * ext4_es_try_to_merge_left(struct ext4_es_tree *tree, struct extent_status *es) { @@ -290,8 +317,8 @@ ext4_es_try_to_merge_left(struct ext4_es_tree *tree, struct extent_status *es) return es; es1 = rb_entry(node, struct extent_status, rb_node); - if (es->start == extent_status_end(es1) + 1) { - es1->len += es->len; + if (ext4_es_can_be_merged(es1, es)) { + es1->es_len += es->es_len; rb_erase(&es->rb_node, &tree->root); ext4_es_free_extent(es); es = es1; @@ -311,8 +338,8 @@ ext4_es_try_to_merge_right(struct ext4_es_tree *tree, struct extent_status *es) return es; es1 = rb_entry(node, struct extent_status, rb_node); - if (es1->start == extent_status_end(es) + 1) { - es->len += es1->len; + if (ext4_es_can_be_merged(es, es1)) { + es->es_len += es1->es_len; rb_erase(node, &tree->root); ext4_es_free_extent(es1); } @@ -320,92 +347,85 @@ ext4_es_try_to_merge_right(struct ext4_es_tree *tree, struct extent_status *es) return es; } -static int __es_insert_extent(struct ext4_es_tree *tree, ext4_lblk_t offset, - ext4_lblk_t len) +static int __es_insert_extent(struct ext4_es_tree *tree, + struct extent_status *newes) { struct rb_node **p = &tree->root.rb_node; struct rb_node *parent = NULL; struct extent_status *es; - ext4_lblk_t end = offset + len - 1; - - BUG_ON(end < offset); - es = tree->cache_es; - if (es && offset == (extent_status_end(es) + 1)) { - es_debug("cached by [%u/%u)\n", es->start, es->len); - es->len += len; - es = ext4_es_try_to_merge_right(tree, es); - goto out; - } else if (es && es->start == end + 1) { - es_debug("cached by [%u/%u)\n", es->start, es->len); - es->start = offset; - es->len += len; - es = ext4_es_try_to_merge_left(tree, es); - goto out; - } else if (es && es->start <= offset && - end <= extent_status_end(es)) { - es_debug("cached by [%u/%u)\n", es->start, es->len); - goto out; - } + + /* invalidate cache */ + /* TODO: first try to lookup in cache */ + tree->cache_es = NULL; while (*p) { parent = *p; es = rb_entry(parent, struct extent_status, rb_node); - if (offset < es->start) { - if (es->start == end + 1) { - es->start = offset; - es->len += len; + if (newes->es_lblk < es->es_lblk) { + if (ext4_es_can_be_merged(newes, es)) { + es->es_lblk = newes->es_lblk; + es->es_len += newes->es_len; es = ext4_es_try_to_merge_left(tree, es); goto out; } p = &(*p)->rb_left; - } else if (offset > extent_status_end(es)) { - if (offset == extent_status_end(es) + 1) { - es->len += len; + } else if (newes->es_lblk > extent_status_end(es)) { + if (ext4_es_can_be_merged(es, newes)) { + es->es_len += newes->es_len; es = ext4_es_try_to_merge_right(tree, es); goto out; } p = &(*p)->rb_right; } else { - if (extent_status_end(es) <= end) - es->len = offset - es->start + len; - goto out; + BUG_ON(1); + return -EINVAL; } } - es = ext4_es_alloc_extent(offset, len); + es = ext4_es_alloc_extent(newes->es_lblk, newes->es_len); if (!es) return -ENOMEM; rb_link_node(&es->rb_node, parent, p); rb_insert_color(&es->rb_node, &tree->root); out: - tree->cache_es = es; return 0; } /* - * ext4_es_insert_extent() adds a space to a delayed extent tree. - * Caller holds inode->i_es_lock. + * ext4_es_insert_extent() adds a space to a extent status tree. * * ext4_es_insert_extent is called by ext4_da_write_begin and * ext4_es_remove_extent. * * Return 0 on success, error code on failure. */ -int ext4_es_insert_extent(struct inode *inode, ext4_lblk_t offset, +int ext4_es_insert_extent(struct inode *inode, ext4_lblk_t lblk, ext4_lblk_t len) { struct ext4_es_tree *tree; + struct extent_status newes; + ext4_lblk_t end = lblk + len - 1; int err = 0; - trace_ext4_es_insert_extent(inode, offset, len); + trace_ext4_es_insert_extent(inode, lblk, len); es_debug("add [%u/%u) to extent status tree of inode %lu\n", - offset, len, inode->i_ino); + lblk, len, inode->i_ino); + + BUG_ON(end < lblk); + + newes.es_lblk = lblk; + newes.es_len = len; write_lock(&EXT4_I(inode)->i_es_lock); tree = &EXT4_I(inode)->i_es_tree; - err = __es_insert_extent(tree, offset, len); + err = __es_remove_extent(tree, lblk, end); + if (err != 0) + goto error; + err = __es_insert_extent(tree, &newes); + +error: write_unlock(&EXT4_I(inode)->i_es_lock); ext4_es_print_tree(inode); @@ -413,57 +433,46 @@ int ext4_es_insert_extent(struct inode *inode, ext4_lblk_t offset, return err; } -/* - * ext4_es_remove_extent() removes a space from a delayed extent tree. - * Caller holds inode->i_es_lock. - * - * Return 0 on success, error code on failure. - */ -int ext4_es_remove_extent(struct inode *inode, ext4_lblk_t offset, - ext4_lblk_t len) +static int __es_remove_extent(struct ext4_es_tree *tree, ext4_lblk_t lblk, + ext4_lblk_t end) { struct rb_node *node; - struct ext4_es_tree *tree; struct extent_status *es; struct extent_status orig_es; - ext4_lblk_t len1, len2, end; + ext4_lblk_t len1, len2; int err = 0; - trace_ext4_es_remove_extent(inode, offset, len); - es_debug("remove [%u/%u) from extent status tree of inode %lu\n", - offset, len, inode->i_ino); - - end = offset + len - 1; - BUG_ON(end < offset); - write_lock(&EXT4_I(inode)->i_es_lock); - tree = &EXT4_I(inode)->i_es_tree; - es = __es_tree_search(&tree->root, offset); + es = __es_tree_search(&tree->root, lblk); if (!es) goto out; - if (es->start > end) + if (es->es_lblk > end) goto out; /* Simply invalidate cache_es. */ tree->cache_es = NULL; - orig_es.start = es->start; - orig_es.len = es->len; - len1 = offset > es->start ? offset - es->start : 0; + orig_es.es_lblk = es->es_lblk; + orig_es.es_len = es->es_len; + len1 = lblk > es->es_lblk ? lblk - es->es_lblk : 0; len2 = extent_status_end(es) > end ? extent_status_end(es) - end : 0; if (len1 > 0) - es->len = len1; + es->es_len = len1; if (len2 > 0) { if (len1 > 0) { - err = __es_insert_extent(tree, end + 1, len2); + struct extent_status newes; + + newes.es_lblk = end + 1; + newes.es_len = len2; + err = __es_insert_extent(tree, &newes); if (err) { - es->start = orig_es.start; - es->len = orig_es.len; + es->es_lblk = orig_es.es_lblk; + es->es_len = orig_es.es_len; goto out; } } else { - es->start = end + 1; - es->len = len2; + es->es_lblk = end + 1; + es->es_len = len2; } goto out; } @@ -487,13 +496,38 @@ int ext4_es_remove_extent(struct inode *inode, ext4_lblk_t offset, es = rb_entry(node, struct extent_status, rb_node); } - if (es && es->start < end + 1) { + if (es && es->es_lblk < end + 1) { len1 = extent_status_end(es) - end; - es->start = end + 1; - es->len = len1; + es->es_lblk = end + 1; + es->es_len = len1; } out: + return err; +} +/* + * ext4_es_remove_extent() removes a space from a extent status tree. + * + * Return 0 on success, error code on failure. + */ +int ext4_es_remove_extent(struct inode *inode, ext4_lblk_t lblk, + ext4_lblk_t len) +{ + struct ext4_es_tree *tree; + ext4_lblk_t end; + int err = 0; + + trace_ext4_es_remove_extent(inode, lblk, len); + es_debug("remove [%u/%u) from extent status tree of inode %lu\n", + lblk, len, inode->i_ino); + + end = lblk + len - 1; + BUG_ON(end < lblk); + + tree = &EXT4_I(inode)->i_es_tree; + + write_lock(&EXT4_I(inode)->i_es_lock); + err = __es_remove_extent(tree, lblk, end); write_unlock(&EXT4_I(inode)->i_es_lock); ext4_es_print_tree(inode); return err; diff --git a/fs/ext4/extents_status.h b/fs/ext4/extents_status.h index 077f82d..81e9339 100644 --- a/fs/ext4/extents_status.h +++ b/fs/ext4/extents_status.h @@ -22,8 +22,8 @@ struct extent_status { struct rb_node rb_node; - ext4_lblk_t start; /* first block extent covers */ - ext4_lblk_t len; /* length of extent in block */ + ext4_lblk_t es_lblk; /* first logical block extent covers */ + ext4_lblk_t es_len; /* length of extent in block */ }; struct ext4_es_tree { @@ -35,9 +35,9 @@ extern int __init ext4_init_es(void); extern void ext4_exit_es(void); extern void ext4_es_init_tree(struct ext4_es_tree *tree); -extern int ext4_es_insert_extent(struct inode *inode, ext4_lblk_t start, +extern int ext4_es_insert_extent(struct inode *inode, ext4_lblk_t lblk, ext4_lblk_t len); -extern int ext4_es_remove_extent(struct inode *inode, ext4_lblk_t start, +extern int ext4_es_remove_extent(struct inode *inode, ext4_lblk_t lblk, ext4_lblk_t len); extern ext4_lblk_t ext4_es_find_extent(struct inode *inode, struct extent_status *es); diff --git a/fs/ext4/file.c b/fs/ext4/file.c index 405565a..718c49f 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -464,10 +464,9 @@ static loff_t ext4_seek_data(struct file *file, loff_t offset, loff_t maxsize) * If there is a delay extent at this offset, * it will be as a data. */ - es.start = last; + es.es_lblk = last; (void)ext4_es_find_extent(inode, &es); - if (last >= es.start && - last < es.start + es.len) { + if (last >= es.es_lblk && last < es.es_lblk + es.es_len) { if (last != start) dataoff = last << blkbits; break; @@ -549,11 +548,10 @@ static loff_t ext4_seek_hole(struct file *file, loff_t offset, loff_t maxsize) * If there is a delay extent at this offset, * we will skip this extent. */ - es.start = last; + es.es_lblk = last; (void)ext4_es_find_extent(inode, &es); - if (last >= es.start && - last < es.start + es.len) { - last = es.start + es.len; + if (last >= es.es_lblk && last < es.es_lblk + es.es_len) { + last = es.es_lblk + es.es_len; holeoff = last << blkbits; continue; } diff --git a/include/trace/events/ext4.h b/include/trace/events/ext4.h index 7e8c36b..952628a 100644 --- a/include/trace/events/ext4.h +++ b/include/trace/events/ext4.h @@ -2068,75 +2068,75 @@ TRACE_EVENT(ext4_ext_remove_space_done, ); TRACE_EVENT(ext4_es_insert_extent, - TP_PROTO(struct inode *inode, ext4_lblk_t start, ext4_lblk_t len), + TP_PROTO(struct inode *inode, ext4_lblk_t lblk, ext4_lblk_t len), - TP_ARGS(inode, start, len), + TP_ARGS(inode, lblk, len), TP_STRUCT__entry( __field( dev_t, dev ) __field( ino_t, ino ) - __field( loff_t, start ) + __field( loff_t, lblk ) __field( loff_t, len ) ), TP_fast_assign( __entry->dev = inode->i_sb->s_dev; __entry->ino = inode->i_ino; - __entry->start = start; + __entry->lblk = lblk; __entry->len = len; ), TP_printk("dev %d,%d ino %lu es [%lld/%lld)", MAJOR(__entry->dev), MINOR(__entry->dev), (unsigned long) __entry->ino, - __entry->start, __entry->len) + __entry->lblk, __entry->len) ); TRACE_EVENT(ext4_es_remove_extent, - TP_PROTO(struct inode *inode, ext4_lblk_t start, ext4_lblk_t len), + TP_PROTO(struct inode *inode, ext4_lblk_t lblk, ext4_lblk_t len), - TP_ARGS(inode, start, len), + TP_ARGS(inode, lblk, len), TP_STRUCT__entry( __field( dev_t, dev ) __field( ino_t, ino ) - __field( loff_t, start ) + __field( loff_t, lblk ) __field( loff_t, len ) ), TP_fast_assign( __entry->dev = inode->i_sb->s_dev; __entry->ino = inode->i_ino; - __entry->start = start; + __entry->lblk = lblk; __entry->len = len; ), TP_printk("dev %d,%d ino %lu es [%lld/%lld)", MAJOR(__entry->dev), MINOR(__entry->dev), (unsigned long) __entry->ino, - __entry->start, __entry->len) + __entry->lblk, __entry->len) ); TRACE_EVENT(ext4_es_find_extent_enter, - TP_PROTO(struct inode *inode, ext4_lblk_t start), + TP_PROTO(struct inode *inode, ext4_lblk_t lblk), - TP_ARGS(inode, start), + TP_ARGS(inode, lblk), TP_STRUCT__entry( __field( dev_t, dev ) __field( ino_t, ino ) - __field( ext4_lblk_t, start ) + __field( ext4_lblk_t, lblk ) ), TP_fast_assign( __entry->dev = inode->i_sb->s_dev; __entry->ino = inode->i_ino; - __entry->start = start; + __entry->lblk = lblk; ), - TP_printk("dev %d,%d ino %lu start %u", + TP_printk("dev %d,%d ino %lu lblk %u", MAJOR(__entry->dev), MINOR(__entry->dev), - (unsigned long) __entry->ino, __entry->start) + (unsigned long) __entry->ino, __entry->lblk) ); TRACE_EVENT(ext4_es_find_extent_exit, @@ -2148,7 +2148,7 @@ TRACE_EVENT(ext4_es_find_extent_exit, TP_STRUCT__entry( __field( dev_t, dev ) __field( ino_t, ino ) - __field( ext4_lblk_t, start ) + __field( ext4_lblk_t, lblk ) __field( ext4_lblk_t, len ) __field( ext4_lblk_t, ret ) ), @@ -2156,15 +2156,15 @@ TRACE_EVENT(ext4_es_find_extent_exit, TP_fast_assign( __entry->dev = inode->i_sb->s_dev; __entry->ino = inode->i_ino; - __entry->start = es->start; - __entry->len = es->len; + __entry->lblk = es->es_lblk; + __entry->len = es->es_len; __entry->ret = ret; ), TP_printk("dev %d,%d ino %lu es [%u/%u) ret %u", MAJOR(__entry->dev), MINOR(__entry->dev), (unsigned long) __entry->ino, - __entry->start, __entry->len, __entry->ret) + __entry->lblk, __entry->len, __entry->ret) ); #endif /* _TRACE_EXT4_H */ -- 1.7.12.rc2.18.g61b472e -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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