diff options
Diffstat (limited to 'meta/recipes-kernel/lttng/lttng-modules/0003-Fix-ext4-adjust-reserved-cluster-count-when-removing.patch')
| -rw-r--r-- | meta/recipes-kernel/lttng/lttng-modules/0003-Fix-ext4-adjust-reserved-cluster-count-when-removing.patch | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/meta/recipes-kernel/lttng/lttng-modules/0003-Fix-ext4-adjust-reserved-cluster-count-when-removing.patch b/meta/recipes-kernel/lttng/lttng-modules/0003-Fix-ext4-adjust-reserved-cluster-count-when-removing.patch new file mode 100644 index 0000000000..7edffee542 --- /dev/null +++ b/meta/recipes-kernel/lttng/lttng-modules/0003-Fix-ext4-adjust-reserved-cluster-count-when-removing.patch @@ -0,0 +1,149 @@ +From cb9f1a821bcf55cecf3813195fd6d4eff8070927 Mon Sep 17 00:00:00 2001 +From: Michael Jeanson <mjeanson@efficios.com> +Date: Mon, 5 Nov 2018 11:35:54 -0500 +Subject: [PATCH 3/9] Fix: ext4: adjust reserved cluster count when removing + extents (v4.20) + +See upstream commit : + + commit 9fe671496b6c286f9033aedfc1718d67721da0ae + Author: Eric Whitney <enwlinux@gmail.com> + Date: Mon Oct 1 14:25:08 2018 -0400 + + ext4: adjust reserved cluster count when removing extents + + Modify ext4_ext_remove_space() and the code it calls to correct the + reserved cluster count for pending reservations (delayed allocated + clusters shared with allocated blocks) when a block range is removed + from the extent tree. Pending reservations may be found for the clusters + at the ends of written or unwritten extents when a block range is removed. + If a physical cluster at the end of an extent is freed, it's necessary + to increment the reserved cluster count to maintain correct accounting + if the corresponding logical cluster is shared with at least one + delayed and unwritten extent as found in the extents status tree. + + Add a new function, ext4_rereserve_cluster(), to reapply a reservation + on a delayed allocated cluster sharing blocks with a freed allocated + cluster. To avoid ENOSPC on reservation, a flag is applied to + ext4_free_blocks() to briefly defer updating the freeclusters counter + when an allocated cluster is freed. This prevents another thread + from allocating the freed block before the reservation can be reapplied. + + Redefine the partial cluster object as a struct to carry more state + information and to clarify the code using it. + + Adjust the conditional code structure in ext4_ext_remove_space to + reduce the indentation level in the main body of the code to improve + readability. + +Signed-off-by: Michael Jeanson <mjeanson@efficios.com> +Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> + +Upstream-Status: backport https://github.com/lttng/lttng-modules/commit/cb9f1a821bcf55cecf3813195fd6d4eff8070927 + +Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com> + +--- + instrumentation/events/lttng-module/ext4.h | 72 +++++++++++++++++++++- + 1 file changed, 69 insertions(+), 3 deletions(-) + +diff --git a/instrumentation/events/lttng-module/ext4.h b/instrumentation/events/lttng-module/ext4.h +index fe6f802..83a80ba 100644 +--- a/instrumentation/events/lttng-module/ext4.h ++++ b/instrumentation/events/lttng-module/ext4.h +@@ -1602,7 +1602,30 @@ LTTNG_TRACEPOINT_EVENT(ext4_ext_show_extent, + ) + ) + +-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0)) ++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,20,0)) ++ ++LTTNG_TRACEPOINT_EVENT(ext4_remove_blocks, ++ TP_PROTO(struct inode *inode, struct ext4_extent *ex, ++ ext4_lblk_t from, ext4_fsblk_t to, ++ struct partial_cluster *pc), ++ ++ TP_ARGS(inode, ex, from, to, pc), ++ ++ TP_FIELDS( ++ ctf_integer(dev_t, dev, inode->i_sb->s_dev) ++ ctf_integer(ino_t, ino, inode->i_ino) ++ ctf_integer(ext4_lblk_t, from, from) ++ ctf_integer(ext4_lblk_t, to, to) ++ ctf_integer(ext4_fsblk_t, ee_pblk, ext4_ext_pblock(ex)) ++ ctf_integer(ext4_lblk_t, ee_lblk, le32_to_cpu(ex->ee_block)) ++ ctf_integer(unsigned short, ee_len, ext4_ext_get_actual_len(ex)) ++ ctf_integer(ext4_fsblk_t, pc_pclu, pc->pclu) ++ ctf_integer(ext4_lblk_t, pc_lblk, pc->lblk) ++ ctf_integer(int, pc_state, pc->state) ++ ) ++) ++ ++#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0)) + + LTTNG_TRACEPOINT_EVENT(ext4_remove_blocks, + TP_PROTO(struct inode *inode, struct ext4_extent *ex, +@@ -1646,7 +1669,29 @@ LTTNG_TRACEPOINT_EVENT(ext4_remove_blocks, + + #endif + +-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0)) ++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,20,0)) ++ ++LTTNG_TRACEPOINT_EVENT(ext4_ext_rm_leaf, ++ TP_PROTO(struct inode *inode, ext4_lblk_t start, ++ struct ext4_extent *ex, ++ struct partial_cluster *pc), ++ ++ TP_ARGS(inode, start, ex, pc), ++ ++ TP_FIELDS( ++ ctf_integer(dev_t, dev, inode->i_sb->s_dev) ++ ctf_integer(ino_t, ino, inode->i_ino) ++ ctf_integer(ext4_lblk_t, start, start) ++ ctf_integer(ext4_lblk_t, ee_lblk, le32_to_cpu(ex->ee_block)) ++ ctf_integer(ext4_fsblk_t, ee_pblk, ext4_ext_pblock(ex)) ++ ctf_integer(short, ee_len, ext4_ext_get_actual_len(ex)) ++ ctf_integer(ext4_fsblk_t, pc_pclu, pc->pclu) ++ ctf_integer(ext4_lblk_t, pc_lblk, pc->lblk) ++ ctf_integer(int, pc_state, pc->state) ++ ) ++) ++ ++#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0)) + + LTTNG_TRACEPOINT_EVENT(ext4_ext_rm_leaf, + TP_PROTO(struct inode *inode, ext4_lblk_t start, +@@ -1733,7 +1778,28 @@ LTTNG_TRACEPOINT_EVENT(ext4_ext_remove_space, + + #endif + +-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0)) ++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,20,0)) ++ ++LTTNG_TRACEPOINT_EVENT(ext4_ext_remove_space_done, ++ TP_PROTO(struct inode *inode, ext4_lblk_t start, ext4_lblk_t end, ++ int depth, struct partial_cluster *pc, __le16 eh_entries), ++ ++ TP_ARGS(inode, start, end, depth, pc, eh_entries), ++ ++ TP_FIELDS( ++ ctf_integer(dev_t, dev, inode->i_sb->s_dev) ++ ctf_integer(ino_t, ino, inode->i_ino) ++ ctf_integer(ext4_lblk_t, start, start) ++ ctf_integer(ext4_lblk_t, end, end) ++ ctf_integer(int, depth, depth) ++ ctf_integer(unsigned short, eh_entries, le16_to_cpu(eh_entries)) ++ ctf_integer(ext4_fsblk_t, pc_pclu, pc->pclu) ++ ctf_integer(ext4_lblk_t, pc_lblk, pc->lblk) ++ ctf_integer(int, pc_state, pc->state) ++ ) ++) ++ ++#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0)) + + LTTNG_TRACEPOINT_EVENT(ext4_ext_remove_space_done, + TP_PROTO(struct inode *inode, ext4_lblk_t start, ext4_lblk_t end, +-- +2.19.1 + |