/// /// Use *_pool_zalloc rather than *_pool_alloc followed by memset with 0 /// // Copyright: (C) 2015 Intel Corp. GPLv2. // Options: --no-includes --include-headers // // Keywords: dma_pool_zalloc, pci_pool_zalloc // virtual context virtual patch virtual org virtual report //---------------------------------------------------------- // For context mode //---------------------------------------------------------- @depends on context@ expression x; statement S; @@ * x = \(dma_pool_alloc\|pci_pool_alloc\)(...); if ((x==NULL) || ...) S * memset(x,0, ...); //---------------------------------------------------------- // For patch mode //---------------------------------------------------------- @depends on patch@ expression x; expression a,b,c; statement S; @@ - x = dma_pool_alloc(a,b,c); + x = dma_pool_zalloc(a,b,c); if ((x==NULL) || ...) S - memset(x,0,...); @depends on patch@ expression x; expression a,b,c; statement S; @@ - x = pci_pool_alloc(a,b,c); + x = pci_pool_zalloc(a,b,c); if ((x==NULL) || ...) S - memset(x,0,...); //---------------------------------------------------------- // For org and report mode //---------------------------------------------------------- @r depends on org || report@ expression x; expression a,b,c; statement S; position p; @@ x = @p\(dma_pool_alloc\|pci_pool_alloc\)(a,b,c); if ((x==NULL) || ...) S memset(x,0, ...); @script:python depends on org@ p << r.p; x << r.x; @@ msg="%s" % (x) msg_safe=msg.replace("[","@(").replace("]",")") coccilib.org.print_todo(p[0], msg_safe) @script:python depends on report@ p << r.p; x << r.x; @@ msg="WARNING: *_pool_zalloc should be used for %s, instead of *_pool_alloc/memset" % (x) coccilib.report.print_report(p[0], msg) t-next.git/tree/tools/testing/selftests/vm?id=1db175428ee374489448361213e9c3b749d14900'>treecommitdiff
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authorJan Kara <jack@suse.cz>2016-10-21 11:33:49 +0200
committerDan Williams <dan.j.williams@intel.com>2016-12-26 20:29:25 -0800
commit1db175428ee374489448361213e9c3b749d14900 (patch)
tree32e4eebdad84d1c6e84508186b0f1fb63df7bdfc /tools/testing/selftests/vm
parent9f141d6ef6258a3a37a045842d9ba7e68f368956 (diff)
ext4: Simplify DAX fault path
Now that dax_iomap_fault() calls ->iomap_begin() without entry lock, we can use transaction starting in ext4_iomap_begin() and thus simplify ext4_dax_fault(). It also provides us proper retries in case of ENOSPC. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'tools/testing/selftests/vm')