From: Jan Kara <jack@suse.cz> To: linux-fsdevel@vger.kernel.org Cc: linux-ext4@vger.kernel.org, linux-mm@kvack.org, Ross Zwisler <ross.zwisler@linux.intel.com>, Dan Williams <dan.j.williams@intel.com>, linux-nvdimm@lists.01.org, Matthew Wilcox <willy@linux.intel.com>, Jan Kara <jack@suse.cz> Subject: [PATCH 11/18] dax: Fix condition for filling of PMD holes Date: Mon, 18 Apr 2016 23:35:34 +0200 [thread overview] Message-ID: <1461015341-20153-12-git-send-email-jack@suse.cz> (raw) In-Reply-To: <1461015341-20153-1-git-send-email-jack@suse.cz> Currently dax_pmd_fault() decides to fill a PMD-sized hole only if returned buffer has BH_Uptodate set. However that doesn't get set for any mapping buffer so that branch is actually a dead code. The BH_Uptodate check doesn't make any sense so just remove it. Signed-off-by: Jan Kara <jack@suse.cz> --- fs/dax.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/dax.c b/fs/dax.c index 237581441bc1..42bf65b4e752 100644 --- a/fs/dax.c +++ b/fs/dax.c @@ -878,7 +878,7 @@ int __dax_pmd_fault(struct vm_area_struct *vma, unsigned long address, goto fallback; } - if (!write && !buffer_mapped(&bh) && buffer_uptodate(&bh)) { + if (!write && !buffer_mapped(&bh)) { spinlock_t *ptl; pmd_t entry; struct page *zero_page = get_huge_zero_page(); -- 2.6.6
WARNING: multiple messages have this Message-ID (diff)
From: Jan Kara <jack@suse.cz> To: linux-fsdevel@vger.kernel.org Cc: linux-ext4@vger.kernel.org, linux-mm@kvack.org, Ross Zwisler <ross.zwisler@linux.intel.com>, Dan Williams <dan.j.williams@intel.com>, linux-nvdimm@lists.01.org, Matthew Wilcox <willy@linux.intel.com>, Jan Kara <jack@suse.cz> Subject: [PATCH 11/18] dax: Fix condition for filling of PMD holes Date: Mon, 18 Apr 2016 23:35:34 +0200 [thread overview] Message-ID: <1461015341-20153-12-git-send-email-jack@suse.cz> (raw) In-Reply-To: <1461015341-20153-1-git-send-email-jack@suse.cz> Currently dax_pmd_fault() decides to fill a PMD-sized hole only if returned buffer has BH_Uptodate set. However that doesn't get set for any mapping buffer so that branch is actually a dead code. The BH_Uptodate check doesn't make any sense so just remove it. Signed-off-by: Jan Kara <jack@suse.cz> --- fs/dax.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/dax.c b/fs/dax.c index 237581441bc1..42bf65b4e752 100644 --- a/fs/dax.c +++ b/fs/dax.c @@ -878,7 +878,7 @@ int __dax_pmd_fault(struct vm_area_struct *vma, unsigned long address, goto fallback; } - if (!write && !buffer_mapped(&bh) && buffer_uptodate(&bh)) { + if (!write && !buffer_mapped(&bh)) { spinlock_t *ptl; pmd_t entry; struct page *zero_page = get_huge_zero_page(); -- 2.6.6 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2016-04-18 21:35 UTC|newest] Thread overview: 122+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-04-18 21:35 [RFC v3] [PATCH 0/18] DAX page fault locking Jan Kara 2016-04-18 21:35 ` Jan Kara 2016-04-18 21:35 ` [PATCH 01/18] ext4: Handle transient ENOSPC properly for DAX Jan Kara 2016-04-18 21:35 ` Jan Kara 2016-04-18 21:35 ` [PATCH 02/18] ext4: Fix race in transient ENOSPC detection Jan Kara 2016-04-18 21:35 ` Jan Kara 2016-04-18 21:35 ` [PATCH 03/18] DAX: move RADIX_DAX_ definitions to dax.c Jan Kara 2016-04-18 21:35 ` Jan Kara 2016-04-18 21:35 ` [PATCH 04/18] dax: Remove complete_unwritten argument Jan Kara 2016-04-18 21:35 ` Jan Kara 2016-04-18 21:35 ` [PATCH 05/18] ext2: Avoid DAX zeroing to corrupt data Jan Kara 2016-04-18 21:35 ` Jan Kara 2016-04-29 16:30 ` Ross Zwisler 2016-04-29 16:30 ` Ross Zwisler 2016-04-29 16:30 ` Ross Zwisler 2016-04-18 21:35 ` [PATCH 06/18] dax: Remove dead zeroing code from fault handlers Jan Kara 2016-04-18 21:35 ` Jan Kara 2016-04-29 16:48 ` Ross Zwisler 2016-04-18 21:35 ` [PATCH 07/18] ext4: Refactor direct IO code Jan Kara 2016-04-18 21:35 ` Jan Kara 2016-04-18 21:35 ` Jan Kara 2016-04-18 21:35 ` [PATCH 08/18] ext4: Pre-zero allocated blocks for DAX IO Jan Kara 2016-04-18 21:35 ` Jan Kara 2016-04-18 21:35 ` Jan Kara 2016-04-29 18:01 ` Ross Zwisler 2016-04-29 18:01 ` Ross Zwisler 2016-04-29 18:01 ` Ross Zwisler 2016-05-02 13:09 ` Jan Kara 2016-05-02 13:09 ` Jan Kara 2016-04-18 21:35 ` [PATCH 09/18] dax: Remove zeroing from dax_io() Jan Kara 2016-04-18 21:35 ` Jan Kara 2016-04-18 21:35 ` Jan Kara 2016-04-29 18:56 ` Ross Zwisler 2016-04-29 18:56 ` Ross Zwisler 2016-04-18 21:35 ` [PATCH 10/18] dax: Remove pointless writeback from dax_do_io() Jan Kara 2016-04-18 21:35 ` Jan Kara 2016-04-18 21:35 ` Jan Kara 2016-04-29 19:00 ` Ross Zwisler 2016-04-29 19:00 ` Ross Zwisler 2016-04-29 19:00 ` Ross Zwisler 2016-04-18 21:35 ` Jan Kara [this message] 2016-04-18 21:35 ` [PATCH 11/18] dax: Fix condition for filling of PMD holes Jan Kara 2016-04-29 19:08 ` Ross Zwisler 2016-04-29 19:08 ` Ross Zwisler 2016-04-29 19:08 ` Ross Zwisler 2016-05-02 13:16 ` Jan Kara 2016-05-02 13:16 ` Jan Kara 2016-04-18 21:35 ` [PATCH 12/18] dax: Remove redundant inode size checks Jan Kara 2016-04-18 21:35 ` Jan Kara 2016-04-18 21:35 ` Jan Kara 2016-04-18 21:35 ` [PATCH 13/18] dax: Make huge page handling depend of CONFIG_BROKEN Jan Kara 2016-04-18 21:35 ` Jan Kara 2016-04-18 21:35 ` Jan Kara 2016-04-29 19:53 ` Ross Zwisler 2016-04-29 19:53 ` Ross Zwisler 2016-05-02 13:19 ` Jan Kara 2016-05-02 13:19 ` Jan Kara 2016-05-02 13:19 ` Jan Kara 2016-04-18 21:35 ` [PATCH 14/18] dax: Define DAX lock bit for radix tree exceptional entry Jan Kara 2016-04-18 21:35 ` Jan Kara 2016-04-18 21:35 ` Jan Kara 2016-04-29 20:03 ` Ross Zwisler 2016-04-29 20:03 ` Ross Zwisler 2016-04-29 20:03 ` Ross Zwisler 2016-04-18 21:35 ` [PATCH 15/18] dax: Allow DAX code to replace exceptional entries Jan Kara 2016-04-18 21:35 ` Jan Kara 2016-04-18 21:35 ` Jan Kara 2016-04-29 20:29 ` Ross Zwisler 2016-04-29 20:29 ` Ross Zwisler 2016-04-18 21:35 ` [PATCH 16/18] dax: New fault locking Jan Kara 2016-04-18 21:35 ` Jan Kara 2016-04-27 4:27 ` NeilBrown 2016-04-27 4:27 ` NeilBrown 2016-05-06 4:13 ` Ross Zwisler 2016-05-06 4:13 ` Ross Zwisler 2016-05-06 4:13 ` Ross Zwisler 2016-05-10 12:27 ` Jan Kara 2016-05-10 12:27 ` Jan Kara 2016-05-11 19:26 ` Ross Zwisler 2016-05-11 19:26 ` Ross Zwisler 2016-05-12 7:58 ` Jan Kara 2016-05-12 7:58 ` Jan Kara 2016-04-18 21:35 ` [PATCH 17/18] dax: Use radix tree entry lock to protect cow faults Jan Kara 2016-04-18 21:35 ` Jan Kara 2016-04-18 21:35 ` Jan Kara 2016-04-19 11:46 ` Jerome Glisse 2016-04-19 11:46 ` Jerome Glisse 2016-04-19 11:46 ` Jerome Glisse 2016-04-19 14:33 ` Jan Kara 2016-04-19 14:33 ` Jan Kara 2016-04-19 14:33 ` Jan Kara 2016-04-19 15:19 ` Jerome Glisse 2016-04-19 15:19 ` Jerome Glisse 2016-04-19 15:19 ` Jerome Glisse 2016-04-19 15:19 ` Jerome Glisse 2016-04-18 21:35 ` [PATCH 18/18] dax: Remove i_mmap_lock protection Jan Kara 2016-04-18 21:35 ` Jan Kara 2016-04-18 21:35 ` Jan Kara 2016-05-06 3:35 ` [RFC v3] [PATCH 0/18] DAX page fault locking Ross Zwisler 2016-05-06 3:35 ` Ross Zwisler 2016-05-06 20:33 ` Ross Zwisler 2016-05-06 20:33 ` Ross Zwisler 2016-05-09 9:38 ` Jan Kara 2016-05-09 9:38 ` Jan Kara 2016-05-09 9:38 ` Jan Kara 2016-05-10 15:28 ` Jan Kara 2016-05-10 15:28 ` Jan Kara 2016-05-10 15:28 ` Jan Kara 2016-05-10 20:30 ` Ross Zwisler 2016-05-10 20:30 ` Ross Zwisler 2016-05-10 20:30 ` Ross Zwisler 2016-05-10 22:39 ` Ross Zwisler 2016-05-10 22:39 ` Ross Zwisler 2016-05-11 9:19 ` Jan Kara 2016-05-11 9:19 ` Jan Kara 2016-05-11 9:19 ` Jan Kara 2016-05-11 15:52 ` Ross Zwisler 2016-05-11 15:52 ` Ross Zwisler 2016-05-11 15:52 ` Ross Zwisler 2016-05-09 21:28 ` Verma, Vishal L 2016-05-10 11:52 ` Jan Kara 2016-05-10 11:52 ` Jan Kara
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