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[PATCH] LoongArch: vDSO: check kcalloc() result in init_vdso

by lgs201920130244＠gmail.com

From: Guangshuo Li <202321181(a)mail.sdu.edu.cn> Add a NULL-pointer check after the kcalloc() call in init_vdso(). If allocation fails, return -ENOMEM to prevent a possible dereference of vdso_info.code_mapping.pages when it is NULL. Fixes: 2ed119aef60d ("LoongArch: Set correct size for vDSO code mapping") Cc: stable(a)vger.kernel.org Signed-off-by: Guangshuo Li <202321181(a)mail.sdu.edu.cn> --- arch/loongarch/kernel/vdso.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/loongarch/kernel/vdso.c b/arch/loongarch/kernel/vdso.c index 10cf1608c7b3..da7a7922fb24 100644 --- a/arch/loongarch/kernel/vdso.c +++ b/arch/loongarch/kernel/vdso.c @@ -53,7 +53,8 @@ static int __init init_vdso(void) vdso_info.size = PAGE_ALIGN(vdso_end - vdso_start); vdso_info.code_mapping.pages = kcalloc(vdso_info.size / PAGE_SIZE, sizeof(struct page *), GFP_KERNEL); - + if (!vdso_info.code_mapping.pages) + return -ENOMEM; pfn = __phys_to_pfn(__pa_symbol(vdso_info.vdso)); for (i = 0; i < vdso_info.size / PAGE_SIZE; i++) vdso_info.code_mapping.pages[i] = pfn_to_page(pfn + i); -- 2.43.0

1 month, 2 weeks

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[PATCH v1] ACPI: video: Fix missing backlight node creation on Zhaoxin platforms

by Zihuan Zhang

Some recent Lenovo and Inspur machines with Zhaoxin CPUs fail to create /sys/class/backlight/acpi_video0 on v6.6 kernels, while the same hardware works correctly on v5.4. Our analysis shows that the current implementation assumes the presence of a GPU. The backlight registration is only triggered if a GPU is detected, but on these platforms the backlight is handled purely by the EC without any GPU. As a result, the detection path does not create the expected backlight node. To fix this, move the following logic: /* Use ACPI video if available, except when native should be preferred. */ if ((video_caps & ACPI_VIDEO_BACKLIGHT) && !(native_available && prefer_native_over_acpi_video())) return acpi_backlight_video; above the if (auto_detect) *auto_detect = true; statement. This ensures that the ACPI video backlight node is created even when no GPU is present, restoring the correct behavior observed on older kernels. Fixes: 78dfc9d1d1ab ("ACPI: video: Add auto_detect arg to __acpi_video_get_backlight_type()") Cc: stable(a)vger.kernel.org Signed-off-by: Zihuan Zhang <zhangzihuan(a)kylinos.cn> --- drivers/acpi/video_detect.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c index d507d5e08435..c1bb22b57f56 100644 --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -1011,6 +1011,11 @@ enum acpi_backlight_type __acpi_video_get_backlight_type(bool native, bool *auto if (acpi_backlight_dmi != acpi_backlight_undef) return acpi_backlight_dmi; + /* Use ACPI video if available, except when native should be preferred. */ + if ((video_caps & ACPI_VIDEO_BACKLIGHT) && + !(native_available && prefer_native_over_acpi_video())) + return acpi_backlight_video; + if (auto_detect) *auto_detect = true; @@ -1024,11 +1029,6 @@ enum acpi_backlight_type __acpi_video_get_backlight_type(bool native, bool *auto if (dell_uart_present) return acpi_backlight_dell_uart; - /* Use ACPI video if available, except when native should be preferred. */ - if ((video_caps & ACPI_VIDEO_BACKLIGHT) && - !(native_available && prefer_native_over_acpi_video())) - return acpi_backlight_video; - /* Use native if available */ if (native_available) return acpi_backlight_native; -- 2.25.1

1 month, 2 weeks

2
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[PATCH] LoongArch: vDSO: check kcalloc() result in init_vdso

by lgs201920130244＠gmail.com

From: Guangshuo Li <202321181(a)mail.sdu.edu.cn> Add a NULL-pointer check after the kcalloc() call in init_vdso(). If allocation fails, return -ENOMEM to prevent a possible dereference of vdso_info.code_mapping.pages when it is NULL. Fixes: 2ed119aef60d ("LoongArch: Set correct size for vDSO code mapping") Cc: stable(a)vger.kernel.org Signed-off-by: Guangshuo Li <202321181(a)mail.sdu.edu.cn> --- arch/loongarch/kernel/vdso.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/loongarch/kernel/vdso.c b/arch/loongarch/kernel/vdso.c index 10cf1608c7b3..da7a7922fb24 100644 --- a/arch/loongarch/kernel/vdso.c +++ b/arch/loongarch/kernel/vdso.c @@ -53,7 +53,8 @@ static int __init init_vdso(void) vdso_info.size = PAGE_ALIGN(vdso_end - vdso_start); vdso_info.code_mapping.pages = kcalloc(vdso_info.size / PAGE_SIZE, sizeof(struct page *), GFP_KERNEL); - + if (!vdso_info.code_mapping.pages) + return -ENOMEM; pfn = __phys_to_pfn(__pa_symbol(vdso_info.vdso)); for (i = 0; i < vdso_info.size / PAGE_SIZE; i++) vdso_info.code_mapping.pages[i] = pfn_to_page(pfn + i); -- 2.43.0

1 month, 2 weeks

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[PATCH v1] tty: serial: qcom_geni_serial: Fix error handling for RS485 mode

by Anup Kulkarni

If uart_get_rs485() fails, the driver returns without detaching the PM domain list. Fix the error handling path in uart_get_rs485_mode() to ensure the PM domain list is detached before exiting. Fixes: 86fa39dd6fb7 ("serial: qcom-geni: Enable Serial on SA8255p Qualcomm platforms") Cc: stable(a)vger.kernel.org Signed-off-by: Anup Kulkarni <anup.kulkarni(a)oss.qualcomm.com> --- drivers/tty/serial/qcom_geni_serial.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c index 9c7b1cea7cfe..0fc0f215b85c 100644 --- a/drivers/tty/serial/qcom_geni_serial.c +++ b/drivers/tty/serial/qcom_geni_serial.c @@ -1928,7 +1928,7 @@ static int qcom_geni_serial_probe(struct platform_device *pdev) ret = uart_get_rs485_mode(uport); if (ret) - return ret; + goto error; devm_pm_runtime_enable(port->se.dev); -- 2.34.1

1 month, 2 weeks

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Product of pipe

by Miffy

1 month, 2 weeks

1
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This Hot-Selling TEE May Interest You

by Miffy

1 month, 2 weeks

1
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Re:Jordan recommend me get in touch

by Seven

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1 month, 2 weeks

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[REGRESSION] v5.15: UDP packets not fragmented after receiving ICMP "Fragmentation Needed" (works in v5.10)

by CHANDRA SEKHAR REDDY

Hi Team, We are observing an intermittent regression in UDP fragmentation handling between Linux kernel versions v5.10.35 and v5.15.71. Problem description: Our application sends UDP packets that exceed the path MTU. An intermediate hop returns an ICMP Type 3, Code 4 (Fragmentation Needed) message. On v5.10.35, the kernel correctly updates the Path MTU cache, and subsequent packets are fragmented as expected. On v5.15.71, although the ICMP message is received by the kernel, subsequent UDP packets are sometimes not fragmented and continue to be dropped. System details: Egress interface MTU: 9192 bytes Path MTU at intermediate hop: 1500 bytes Kernel parameter: ip_no_pmtu_disc=0 (default) Questions / request for feedback: Is this a known regression in the 5.15 kernel series? We have verified that the Path MTU cache is usually updated correctly. Is there a way to detect or log cases where the cache is not updated? If this issue has already been addressed, could you please point us to the relevant fix commit so we can backport and test it? We have reviewed several patches between v5.10.35 and v5.15.71 related to PMTU and ICMP handling and examined the code flow, but have not been able to pinpoint the root cause. Any guidance, insights, or pointers would be greatly appreciated. Best regards, Chandrasekharreddy C

1 month, 2 weeks

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[PATCH v2] ceph: fix deadlock bugs by making iput() calls asynchronous

by Max Kellermann

The iput() function is a dangerous one - if the reference counter goes to zero, the function may block for a long time due to: - inode_wait_for_writeback() waits until writeback on this inode completes - the filesystem-specific "evict_inode" callback can do similar things; e.g. all netfs-based filesystems will call netfs_wait_for_outstanding_io() which is similar to inode_wait_for_writeback() Therefore, callers must carefully evaluate the context they're in and check whether invoking iput() is a good idea at all. Most of the time, this is not a problem because the dcache holds references to all inodes, and the dcache is usually the one to release the last reference. But this assumption is fragile. For example, under (memcg) memory pressure, the dcache shrinker is more likely to release inode references, moving the inode eviction to contexts where that was extremely unlikely to occur. Our production servers "found" at least two deadlock bugs in the Ceph filesystem that were caused by this iput() behavior: 1. Writeback may lead to iput() calls in Ceph (e.g. from ceph_put_wrbuffer_cap_refs()) which deadlocks in inode_wait_for_writeback(). Waiting for writeback completion from within writeback will obviously never be able to make any progress. This leads to blocked kworkers like this: INFO: task kworker/u777:6:1270802 blocked for more than 122 seconds. Not tainted 6.16.7-i1-es #773 task:kworker/u777:6 state:D stack:0 pid:1270802 tgid:1270802 ppid:2 task_flags:0x4208060 flags:0x00004000 Workqueue: writeback wb_workfn (flush-ceph-3) Call Trace: <TASK> __schedule+0x4ea/0x17d0 schedule+0x1c/0xc0 inode_wait_for_writeback+0x71/0xb0 evict+0xcf/0x200 ceph_put_wrbuffer_cap_refs+0xdd/0x220 ceph_invalidate_folio+0x97/0xc0 ceph_writepages_start+0x127b/0x14d0 do_writepages+0xba/0x150 __writeback_single_inode+0x34/0x290 writeback_sb_inodes+0x203/0x470 __writeback_inodes_wb+0x4c/0xe0 wb_writeback+0x189/0x2b0 wb_workfn+0x30b/0x3d0 process_one_work+0x143/0x2b0 worker_thread+0x30a/0x450 2. In the Ceph messenger thread (net/ceph/messenger*.c), any iput() call may invoke ceph_evict_inode() which will deadlock in netfs_wait_for_outstanding_io(); since this blocks the messenger thread, completions from the Ceph servers will not ever be received and handled. It looks like these deadlock bugs have been in the Ceph filesystem code since forever (therefore no "Fixes" tag in this patch). There may be various ways to solve this: - make iput() asynchronous and defer the actual eviction like fput() (may add overhead) - make iput() only asynchronous if I_SYNC is set (doesn't solve random things happening inside the "evict_inode" callback) - add iput_deferred() to make this asynchronous behavior/overhead optional and explicit - refactor Ceph to avoid iput() calls from within writeback and messenger (if that is even possible) - add a Ceph-specific workaround After advice from Mateusz Guzik, I decided to do the latter. The implementation is simple because it piggybacks on the existing work_struct for ceph_queue_inode_work() - ceph_inode_work() calls iput() at the end which means we can donate the last reference to it. This patch adds ceph_iput_async() and converts lots of iput() calls to it - at least those that may come through writeback and the messenger. Signed-off-by: Max Kellermann <max.kellermann(a)ionos.com> Cc: Mateusz Guzik <mjguzik(a)gmail.com> Cc: stable(a)vger.kernel.org --- v1->v2: using atomic_add_unless() instead of atomic_add_unless() to avoid letting i_count drop to zero which may cause races (thanks Mateusz Guzik) Signed-off-by: Max Kellermann <max.kellermann(a)ionos.com> --- fs/ceph/addr.c | 2 +- fs/ceph/caps.c | 16 ++++++++-------- fs/ceph/dir.c | 2 +- fs/ceph/inode.c | 34 ++++++++++++++++++++++++++++++++++ fs/ceph/mds_client.c | 30 +++++++++++++++--------------- fs/ceph/quota.c | 4 ++-- fs/ceph/snap.c | 10 +++++----- fs/ceph/super.h | 2 ++ 8 files changed, 68 insertions(+), 32 deletions(-) diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index 322ed268f14a..fc497c91530e 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -265,7 +265,7 @@ static void finish_netfs_read(struct ceph_osd_request *req) subreq->error = err; trace_netfs_sreq(subreq, netfs_sreq_trace_io_progress); netfs_read_subreq_terminated(subreq); - iput(req->r_inode); + ceph_iput_async(req->r_inode); ceph_dec_osd_stopping_blocker(fsc->mdsc); } diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c index b1a8ff612c41..af9e3ae9ab7e 100644 --- a/fs/ceph/caps.c +++ b/fs/ceph/caps.c @@ -1771,7 +1771,7 @@ void ceph_flush_snaps(struct ceph_inode_info *ci, spin_unlock(&mdsc->snap_flush_lock); if (need_put) - iput(inode); + ceph_iput_async(inode); } /* @@ -3319,7 +3319,7 @@ static void __ceph_put_cap_refs(struct ceph_inode_info *ci, int had, if (wake) wake_up_all(&ci->i_cap_wq); while (put-- > 0) - iput(inode); + ceph_iput_async(inode); } void ceph_put_cap_refs(struct ceph_inode_info *ci, int had) @@ -3419,7 +3419,7 @@ void ceph_put_wrbuffer_cap_refs(struct ceph_inode_info *ci, int nr, if (complete_capsnap) wake_up_all(&ci->i_cap_wq); while (put-- > 0) { - iput(inode); + ceph_iput_async(inode); } } @@ -3917,7 +3917,7 @@ static void handle_cap_flush_ack(struct inode *inode, u64 flush_tid, if (wake_mdsc) wake_up_all(&mdsc->cap_flushing_wq); if (drop) - iput(inode); + ceph_iput_async(inode); } void __ceph_remove_capsnap(struct inode *inode, struct ceph_cap_snap *capsnap, @@ -4008,7 +4008,7 @@ static void handle_cap_flushsnap_ack(struct inode *inode, u64 flush_tid, wake_up_all(&ci->i_cap_wq); if (wake_mdsc) wake_up_all(&mdsc->cap_flushing_wq); - iput(inode); + ceph_iput_async(inode); } } @@ -4557,7 +4557,7 @@ void ceph_handle_caps(struct ceph_mds_session *session, done: mutex_unlock(&session->s_mutex); done_unlocked: - iput(inode); + ceph_iput_async(inode); out: ceph_dec_mds_stopping_blocker(mdsc); @@ -4636,7 +4636,7 @@ unsigned long ceph_check_delayed_caps(struct ceph_mds_client *mdsc) doutc(cl, "on %p %llx.%llx\n", inode, ceph_vinop(inode)); ceph_check_caps(ci, 0); - iput(inode); + ceph_iput_async(inode); spin_lock(&mdsc->cap_delay_lock); } @@ -4675,7 +4675,7 @@ static void flush_dirty_session_caps(struct ceph_mds_session *s) spin_unlock(&mdsc->cap_dirty_lock); ceph_wait_on_async_create(inode); ceph_check_caps(ci, CHECK_CAPS_FLUSH); - iput(inode); + ceph_iput_async(inode); spin_lock(&mdsc->cap_dirty_lock); } spin_unlock(&mdsc->cap_dirty_lock); diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c index 32973c62c1a2..ec73ed52a227 100644 --- a/fs/ceph/dir.c +++ b/fs/ceph/dir.c @@ -1290,7 +1290,7 @@ static void ceph_async_unlink_cb(struct ceph_mds_client *mdsc, ceph_mdsc_free_path_info(&path_info); } out: - iput(req->r_old_inode); + ceph_iput_async(req->r_old_inode); ceph_mdsc_release_dir_caps(req); } diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c index f67025465de0..d7c0ed82bf62 100644 --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -2191,6 +2191,40 @@ void ceph_queue_inode_work(struct inode *inode, int work_bit) } } +/** + * Queue an asynchronous iput() call in a worker thread. Use this + * instead of iput() in contexts where evicting the inode is unsafe. + * For example, inode eviction may cause deadlocks in + * inode_wait_for_writeback() (when called from within writeback) or + * in netfs_wait_for_outstanding_io() (when called from within the + * Ceph messenger). + */ +void ceph_iput_async(struct inode *inode) +{ + if (unlikely(!inode)) + return; + + if (likely(atomic_add_unless(&inode->i_count, -1, 1))) + /* somebody else is holding another reference - + * nothing left to do for us + */ + return; + + doutc(ceph_inode_to_fs_client(inode)->client, "%p %llx.%llx\n", inode, ceph_vinop(inode)); + + /* simply queue a ceph_inode_work() (donating the remaining + * reference) without setting i_work_mask bit; other than + * putting the reference, there is nothing to do + */ + WARN_ON_ONCE(!queue_work(ceph_inode_to_fs_client(inode)->inode_wq, + &ceph_inode(inode)->i_work)); + + /* note: queue_work() cannot fail; it i_work were already + * queued, then it would be holding another reference, but no + * such reference exists + */ +} + static void ceph_do_invalidate_pages(struct inode *inode) { struct ceph_client *cl = ceph_inode_to_client(inode); diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index 3bc72b47fe4d..22d75c3be5a8 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -1097,14 +1097,14 @@ void ceph_mdsc_release_request(struct kref *kref) ceph_msg_put(req->r_reply); if (req->r_inode) { ceph_put_cap_refs(ceph_inode(req->r_inode), CEPH_CAP_PIN); - iput(req->r_inode); + ceph_iput_async(req->r_inode); } if (req->r_parent) { ceph_put_cap_refs(ceph_inode(req->r_parent), CEPH_CAP_PIN); - iput(req->r_parent); + ceph_iput_async(req->r_parent); } - iput(req->r_target_inode); - iput(req->r_new_inode); + ceph_iput_async(req->r_target_inode); + ceph_iput_async(req->r_new_inode); if (req->r_dentry) dput(req->r_dentry); if (req->r_old_dentry) @@ -1118,7 +1118,7 @@ void ceph_mdsc_release_request(struct kref *kref) */ ceph_put_cap_refs(ceph_inode(req->r_old_dentry_dir), CEPH_CAP_PIN); - iput(req->r_old_dentry_dir); + ceph_iput_async(req->r_old_dentry_dir); } kfree(req->r_path1); kfree(req->r_path2); @@ -1240,7 +1240,7 @@ static void __unregister_request(struct ceph_mds_client *mdsc, } if (req->r_unsafe_dir) { - iput(req->r_unsafe_dir); + ceph_iput_async(req->r_unsafe_dir); req->r_unsafe_dir = NULL; } @@ -1413,7 +1413,7 @@ static int __choose_mds(struct ceph_mds_client *mdsc, cap = rb_entry(rb_first(&ci->i_caps), struct ceph_cap, ci_node); if (!cap) { spin_unlock(&ci->i_ceph_lock); - iput(inode); + ceph_iput_async(inode); goto random; } mds = cap->session->s_mds; @@ -1422,7 +1422,7 @@ static int __choose_mds(struct ceph_mds_client *mdsc, cap == ci->i_auth_cap ? "auth " : "", cap); spin_unlock(&ci->i_ceph_lock); out: - iput(inode); + ceph_iput_async(inode); return mds; random: @@ -1841,7 +1841,7 @@ int ceph_iterate_session_caps(struct ceph_mds_session *session, spin_unlock(&session->s_cap_lock); if (last_inode) { - iput(last_inode); + ceph_iput_async(last_inode); last_inode = NULL; } if (old_cap) { @@ -1874,7 +1874,7 @@ int ceph_iterate_session_caps(struct ceph_mds_session *session, session->s_cap_iterator = NULL; spin_unlock(&session->s_cap_lock); - iput(last_inode); + ceph_iput_async(last_inode); if (old_cap) ceph_put_cap(session->s_mdsc, old_cap); @@ -1904,7 +1904,7 @@ static int remove_session_caps_cb(struct inode *inode, int mds, void *arg) if (invalidate) ceph_queue_invalidate(inode); while (iputs--) - iput(inode); + ceph_iput_async(inode); return 0; } @@ -1944,7 +1944,7 @@ static void remove_session_caps(struct ceph_mds_session *session) spin_unlock(&session->s_cap_lock); inode = ceph_find_inode(sb, vino); - iput(inode); + ceph_iput_async(inode); spin_lock(&session->s_cap_lock); } @@ -2512,7 +2512,7 @@ static void ceph_cap_unlink_work(struct work_struct *work) doutc(cl, "on %p %llx.%llx\n", inode, ceph_vinop(inode)); ceph_check_caps(ci, CHECK_CAPS_FLUSH); - iput(inode); + ceph_iput_async(inode); spin_lock(&mdsc->cap_delay_lock); } } @@ -3933,7 +3933,7 @@ static void handle_reply(struct ceph_mds_session *session, struct ceph_msg *msg) !req->r_reply_info.has_create_ino) { /* This should never happen on an async create */ WARN_ON_ONCE(req->r_deleg_ino); - iput(in); + ceph_iput_async(in); in = NULL; } @@ -5313,7 +5313,7 @@ static void handle_lease(struct ceph_mds_client *mdsc, out: mutex_unlock(&session->s_mutex); - iput(inode); + ceph_iput_async(inode); ceph_dec_mds_stopping_blocker(mdsc); return; diff --git a/fs/ceph/quota.c b/fs/ceph/quota.c index d90eda19bcc4..bba00f8926e6 100644 --- a/fs/ceph/quota.c +++ b/fs/ceph/quota.c @@ -76,7 +76,7 @@ void ceph_handle_quota(struct ceph_mds_client *mdsc, le64_to_cpu(h->max_files)); spin_unlock(&ci->i_ceph_lock); - iput(inode); + ceph_iput_async(inode); out: ceph_dec_mds_stopping_blocker(mdsc); } @@ -190,7 +190,7 @@ void ceph_cleanup_quotarealms_inodes(struct ceph_mds_client *mdsc) node = rb_first(&mdsc->quotarealms_inodes); qri = rb_entry(node, struct ceph_quotarealm_inode, node); rb_erase(node, &mdsc->quotarealms_inodes); - iput(qri->inode); + ceph_iput_async(qri->inode); kfree(qri); } mutex_unlock(&mdsc->quotarealms_inodes_mutex); diff --git a/fs/ceph/snap.c b/fs/ceph/snap.c index c65f2b202b2b..19f097e79b3c 100644 --- a/fs/ceph/snap.c +++ b/fs/ceph/snap.c @@ -735,7 +735,7 @@ static void queue_realm_cap_snaps(struct ceph_mds_client *mdsc, if (!inode) continue; spin_unlock(&realm->inodes_with_caps_lock); - iput(lastinode); + ceph_iput_async(lastinode); lastinode = inode; /* @@ -762,7 +762,7 @@ static void queue_realm_cap_snaps(struct ceph_mds_client *mdsc, spin_lock(&realm->inodes_with_caps_lock); } spin_unlock(&realm->inodes_with_caps_lock); - iput(lastinode); + ceph_iput_async(lastinode); if (capsnap) kmem_cache_free(ceph_cap_snap_cachep, capsnap); @@ -955,7 +955,7 @@ static void flush_snaps(struct ceph_mds_client *mdsc) ihold(inode); spin_unlock(&mdsc->snap_flush_lock); ceph_flush_snaps(ci, &session); - iput(inode); + ceph_iput_async(inode); spin_lock(&mdsc->snap_flush_lock); } spin_unlock(&mdsc->snap_flush_lock); @@ -1116,12 +1116,12 @@ void ceph_handle_snap(struct ceph_mds_client *mdsc, ceph_get_snap_realm(mdsc, realm); ceph_change_snap_realm(inode, realm); spin_unlock(&ci->i_ceph_lock); - iput(inode); + ceph_iput_async(inode); continue; skip_inode: spin_unlock(&ci->i_ceph_lock); - iput(inode); + ceph_iput_async(inode); } /* we may have taken some of the old realm's children. */ diff --git a/fs/ceph/super.h b/fs/ceph/super.h index cf176aab0f82..361a72a67bb8 100644 --- a/fs/ceph/super.h +++ b/fs/ceph/super.h @@ -1085,6 +1085,8 @@ static inline void ceph_queue_flush_snaps(struct inode *inode) ceph_queue_inode_work(inode, CEPH_I_WORK_FLUSH_SNAPS); } +void ceph_iput_async(struct inode *inode); + extern int ceph_try_to_choose_auth_mds(struct inode *inode, int mask); extern int __ceph_do_getattr(struct inode *inode, struct page *locked_page, int mask, bool force); -- 2.47.3

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