121 lines
4.1 KiB
Diff
121 lines
4.1 KiB
Diff
From d79660ccc65f163e0d9cf91cc13a199bec04d5f1 Mon Sep 17 00:00:00 2001
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From: Xavi Hernandez Juan <xhernandez@redhat.com>
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Date: Wed, 20 May 2020 12:55:43 +0000
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Subject: [PATCH 378/379] Revert "open-behind: fix missing fd reference"
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This reverts commit 30cbdf8c06145a0c290da42ecc0a7eae928200b7.
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The patch is not complete because there have been some crash reports
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upstream recently after the patch was released. A new patch that should
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cover all corner cases is under review (), but it's a big change and it
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could be risky to backport it without enough testing.
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Since there exists a workaround to avoid the problem (disable
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open-behind), for now we revert the patch.
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Change-Id: I9cfc55623c33758cf5530b18f03c0d795b0f650b
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BUG: 1830713
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Signed-off-by: Xavi Hernandez <xhernandez@redhat.com>
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Reviewed-on: https://code.engineering.redhat.com/gerrit/200952
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Tested-by: RHGS Build Bot <nigelb@redhat.com>
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Reviewed-by: Sunil Kumar Heggodu Gopala Acharya <sheggodu@redhat.com>
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---
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xlators/performance/open-behind/src/open-behind.c | 27 +++++++++--------------
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1 file changed, 11 insertions(+), 16 deletions(-)
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diff --git a/xlators/performance/open-behind/src/open-behind.c b/xlators/performance/open-behind/src/open-behind.c
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index 14ebc12..268c717 100644
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--- a/xlators/performance/open-behind/src/open-behind.c
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+++ b/xlators/performance/open-behind/src/open-behind.c
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@@ -206,13 +206,8 @@ ob_fd_free(ob_fd_t *ob_fd)
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if (ob_fd->xdata)
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dict_unref(ob_fd->xdata);
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- if (ob_fd->open_frame) {
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- /* If we sill have a frame it means that background open has never
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- * been triggered. We need to release the pending reference. */
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- fd_unref(ob_fd->fd);
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-
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+ if (ob_fd->open_frame)
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STACK_DESTROY(ob_fd->open_frame->root);
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- }
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GF_FREE(ob_fd);
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}
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@@ -302,7 +297,6 @@ ob_wake_cbk(call_frame_t *frame, void *cookie, xlator_t *this, int op_ret,
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call_resume(stub);
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}
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- /* The background open is completed. We can release the 'fd' reference. */
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fd_unref(fd);
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STACK_DESTROY(frame->root);
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@@ -337,9 +331,7 @@ ob_fd_wake(xlator_t *this, fd_t *fd, ob_fd_t *ob_fd)
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}
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if (frame) {
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- /* We don't need to take a reference here. We already have a reference
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- * while the open is pending. */
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- frame->local = fd;
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+ frame->local = fd_ref(fd);
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STACK_WIND(frame, ob_wake_cbk, FIRST_CHILD(this),
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FIRST_CHILD(this)->fops->open, &ob_fd->loc, ob_fd->flags, fd,
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@@ -353,12 +345,15 @@ void
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ob_inode_wake(xlator_t *this, struct list_head *ob_fds)
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{
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ob_fd_t *ob_fd = NULL, *tmp = NULL;
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+ fd_t *fd = NULL;
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if (!list_empty(ob_fds)) {
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list_for_each_entry_safe(ob_fd, tmp, ob_fds, ob_fds_on_inode)
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{
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ob_fd_wake(this, ob_fd->fd, ob_fd);
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+ fd = ob_fd->fd;
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ob_fd_free(ob_fd);
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+ fd_unref(fd);
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}
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}
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}
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@@ -370,7 +365,7 @@ ob_fd_copy(ob_fd_t *src, ob_fd_t *dst)
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if (!src || !dst)
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goto out;
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- dst->fd = src->fd;
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+ dst->fd = __fd_ref(src->fd);
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dst->loc.inode = inode_ref(src->loc.inode);
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gf_uuid_copy(dst->loc.gfid, src->loc.gfid);
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dst->flags = src->flags;
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@@ -514,6 +509,7 @@ ob_open_behind(call_frame_t *frame, xlator_t *this, loc_t *loc, int flags,
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ob_fd->ob_inode = ob_inode;
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+ /* don't do fd_ref, it'll cause leaks */
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ob_fd->fd = fd;
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ob_fd->open_frame = copy_frame(frame);
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@@ -543,16 +539,15 @@ ob_open_behind(call_frame_t *frame, xlator_t *this, loc_t *loc, int flags,
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}
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UNLOCK(&fd->inode->lock);
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- /* We take a reference while the background open is pending or being
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- * processed. If we finally wind the request in the foreground, then
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- * ob_fd_free() will take care of this additional reference. */
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- fd_ref(fd);
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-
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if (!open_in_progress && !unlinked) {
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+ fd_ref(fd);
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+
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STACK_UNWIND_STRICT(open, frame, 0, 0, fd, xdata);
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if (!conf->lazy_open)
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ob_fd_wake(this, fd, NULL);
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+
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+ fd_unref(fd);
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} else {
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ob_fd_free(ob_fd);
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STACK_WIND(frame, default_open_cbk, FIRST_CHILD(this),
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--
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1.8.3.1
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