From: Hugh Dickins Date: Tue, 5 Feb 2008 06:28:43 +0000 (-0800) Subject: shmem: SGP_QUICK and SGP_FAULT redundant X-Git-Tag: v2.6.25-rc1~975 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=27d54b398ec0edea0e7417f003171017300e0efc;p=linux-2.6 shmem: SGP_QUICK and SGP_FAULT redundant Remove SGP_QUICK from the sgp_type enum: it was for shmem_populate and has no users now. Remove SGP_FAULT from the enum: SGP_CACHE does just as well (and shmem_getpage is about to return with page always locked). Signed-off-by: Hugh Dickins Acked-by: Rik van Riel Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/mm/shmem.c b/mm/shmem.c index 55b696aa3d..20cefe16ea 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -78,11 +78,9 @@ /* Flag allocation requirements to shmem_getpage and shmem_swp_alloc */ enum sgp_type { - SGP_QUICK, /* don't try more than file page cache lookup */ SGP_READ, /* don't exceed i_size, don't allocate page */ SGP_CACHE, /* don't exceed i_size, may allocate page */ SGP_WRITE, /* may exceed i_size, may allocate page */ - SGP_FAULT, /* same as SGP_CACHE, return with page locked */ }; static int shmem_getpage(struct inode *inode, unsigned long idx, @@ -1116,8 +1114,6 @@ repeat: if (filepage && PageUptodate(filepage)) goto done; error = 0; - if (sgp == SGP_QUICK) - goto failed; gfp = mapping_gfp_mask(mapping); spin_lock(&info->lock); @@ -1292,7 +1288,7 @@ repeat: done: if (*pagep != filepage) { *pagep = filepage; - if (sgp != SGP_FAULT) + if (sgp != SGP_CACHE) unlock_page(filepage); } @@ -1315,7 +1311,7 @@ static int shmem_fault(struct vm_area_struct *vma, struct vm_fault *vmf) if (((loff_t)vmf->pgoff << PAGE_CACHE_SHIFT) >= i_size_read(inode)) return VM_FAULT_SIGBUS; - error = shmem_getpage(inode, vmf->pgoff, &vmf->page, SGP_FAULT, &ret); + error = shmem_getpage(inode, vmf->pgoff, &vmf->page, SGP_CACHE, &ret); if (error) return ((error == -ENOMEM) ? VM_FAULT_OOM : VM_FAULT_SIGBUS);