diff options
author | David Howells <dhowells@redhat.com> | 2020-10-28 14:23:46 +0000 |
---|---|---|
committer | David Howells <dhowells@redhat.com> | 2021-04-23 10:17:26 +0100 |
commit | 67d78a6f6e7b38c1beb7d8c09c6d40f8682e60b1 (patch) | |
tree | 1199a284e86dd7e5b4ad03b25006c9a62f78fe08 /fs/afs | |
parent | 03ffae909278bd773ae4ce0f15fd8fd77a7b08a4 (diff) |
afs: Pass page into dirty region helpers to provide THP size
Pass a pointer to the page being accessed into the dirty region helpers so
that the size of the page can be determined in case it's a transparent huge
page.
This also required the page to be passed into the afs_page_dirty trace
point - so there's no need to specifically pass in the index or private
data as these can be retrieved directly from the page struct.
Signed-off-by: David Howells <dhowells@redhat.com>
Tested-By: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
cc: linux-cachefs@redhat.com
cc: linux-fsdevel@vger.kernel.org
Link: https://lore.kernel.org/r/160588527183.3465195.16107942526481976308.stgit@warthog.procyon.org.uk/ # rfc
Link: https://lore.kernel.org/r/161118144921.1232039.11377711180492625929.stgit@warthog.procyon.org.uk/ # rfc
Link: https://lore.kernel.org/r/161161040747.2537118.11435394902674511430.stgit@warthog.procyon.org.uk/ # v2
Link: https://lore.kernel.org/r/161340404553.1303470.11414163641767769882.stgit@warthog.procyon.org.uk/ # v3
Link: https://lore.kernel.org/r/161539548385.286939.8864598314493255313.stgit@warthog.procyon.org.uk/ # v4
Link: https://lore.kernel.org/r/161653804285.2770958.3497360004849598038.stgit@warthog.procyon.org.uk/ # v5
Link: https://lore.kernel.org/r/161789087043.6155.16922142208140170528.stgit@warthog.procyon.org.uk/ # v6
Diffstat (limited to 'fs/afs')
-rw-r--r-- | fs/afs/file.c | 20 | ||||
-rw-r--r-- | fs/afs/internal.h | 16 | ||||
-rw-r--r-- | fs/afs/write.c | 60 |
3 files changed, 42 insertions, 54 deletions
diff --git a/fs/afs/file.c b/fs/afs/file.c index 314f6a9517c7..f1bae0b0a9c0 100644 --- a/fs/afs/file.c +++ b/fs/afs/file.c @@ -514,8 +514,8 @@ static void afs_invalidate_dirty(struct page *page, unsigned int offset, return; /* We may need to shorten the dirty region */ - f = afs_page_dirty_from(priv); - t = afs_page_dirty_to(priv); + f = afs_page_dirty_from(page, priv); + t = afs_page_dirty_to(page, priv); if (t <= offset || f >= end) return; /* Doesn't overlap */ @@ -533,17 +533,17 @@ static void afs_invalidate_dirty(struct page *page, unsigned int offset, if (f == t) goto undirty; - priv = afs_page_dirty(f, t); + priv = afs_page_dirty(page, f, t); set_page_private(page, priv); - trace_afs_page_dirty(vnode, tracepoint_string("trunc"), page->index, priv); + trace_afs_page_dirty(vnode, tracepoint_string("trunc"), page); return; undirty: - trace_afs_page_dirty(vnode, tracepoint_string("undirty"), page->index, priv); + trace_afs_page_dirty(vnode, tracepoint_string("undirty"), page); clear_page_dirty_for_io(page); full_invalidate: - priv = (unsigned long)detach_page_private(page); - trace_afs_page_dirty(vnode, tracepoint_string("inval"), page->index, priv); + detach_page_private(page); + trace_afs_page_dirty(vnode, tracepoint_string("inval"), page); } /* @@ -571,7 +571,6 @@ static void afs_invalidatepage(struct page *page, unsigned int offset, static int afs_releasepage(struct page *page, gfp_t gfp_flags) { struct afs_vnode *vnode = AFS_FS_I(page->mapping->host); - unsigned long priv; _enter("{{%llx:%llu}[%lu],%lx},%x", vnode->fid.vid, vnode->fid.vnode, page->index, page->flags, @@ -580,9 +579,8 @@ static int afs_releasepage(struct page *page, gfp_t gfp_flags) /* deny if page is being written to the cache and the caller hasn't * elected to wait */ if (PagePrivate(page)) { - priv = (unsigned long)detach_page_private(page); - trace_afs_page_dirty(vnode, tracepoint_string("rel"), - page->index, priv); + detach_page_private(page); + trace_afs_page_dirty(vnode, tracepoint_string("rel"), page); } /* indicate that the page can be released */ diff --git a/fs/afs/internal.h b/fs/afs/internal.h index 1627b1872812..fd437d4722b5 100644 --- a/fs/afs/internal.h +++ b/fs/afs/internal.h @@ -875,31 +875,31 @@ struct afs_vnode_cache_aux { #define __AFS_PAGE_PRIV_MMAPPED 0x8000UL #endif -static inline unsigned int afs_page_dirty_resolution(void) +static inline unsigned int afs_page_dirty_resolution(struct page *page) { - int shift = PAGE_SHIFT - (__AFS_PAGE_PRIV_SHIFT - 1); + int shift = thp_order(page) + PAGE_SHIFT - (__AFS_PAGE_PRIV_SHIFT - 1); return (shift > 0) ? shift : 0; } -static inline size_t afs_page_dirty_from(unsigned long priv) +static inline size_t afs_page_dirty_from(struct page *page, unsigned long priv) { unsigned long x = priv & __AFS_PAGE_PRIV_MASK; /* The lower bound is inclusive */ - return x << afs_page_dirty_resolution(); + return x << afs_page_dirty_resolution(page); } -static inline size_t afs_page_dirty_to(unsigned long priv) +static inline size_t afs_page_dirty_to(struct page *page, unsigned long priv) { unsigned long x = (priv >> __AFS_PAGE_PRIV_SHIFT) & __AFS_PAGE_PRIV_MASK; /* The upper bound is immediately beyond the region */ - return (x + 1) << afs_page_dirty_resolution(); + return (x + 1) << afs_page_dirty_resolution(page); } -static inline unsigned long afs_page_dirty(size_t from, size_t to) +static inline unsigned long afs_page_dirty(struct page *page, size_t from, size_t to) { - unsigned int res = afs_page_dirty_resolution(); + unsigned int res = afs_page_dirty_resolution(page); from >>= res; to = (to - 1) >> res; return (to << __AFS_PAGE_PRIV_SHIFT) | from; diff --git a/fs/afs/write.c b/fs/afs/write.c index 901bd2ee2dd0..babc84dd9719 100644 --- a/fs/afs/write.c +++ b/fs/afs/write.c @@ -112,15 +112,14 @@ try_again: t = f = 0; if (PagePrivate(page)) { priv = page_private(page); - f = afs_page_dirty_from(priv); - t = afs_page_dirty_to(priv); + f = afs_page_dirty_from(page, priv); + t = afs_page_dirty_to(page, priv); ASSERTCMP(f, <=, t); } if (f != t) { if (PageWriteback(page)) { - trace_afs_page_dirty(vnode, tracepoint_string("alrdy"), - page->index, priv); + trace_afs_page_dirty(vnode, tracepoint_string("alrdy"), page); goto flush_conflicting_write; } /* If the file is being filled locally, allow inter-write @@ -204,21 +203,19 @@ int afs_write_end(struct file *file, struct address_space *mapping, if (PagePrivate(page)) { priv = page_private(page); - f = afs_page_dirty_from(priv); - t = afs_page_dirty_to(priv); + f = afs_page_dirty_from(page, priv); + t = afs_page_dirty_to(page, priv); if (from < f) f = from; if (to > t) t = to; - priv = afs_page_dirty(f, t); + priv = afs_page_dirty(page, f, t); set_page_private(page, priv); - trace_afs_page_dirty(vnode, tracepoint_string("dirty+"), - page->index, priv); + trace_afs_page_dirty(vnode, tracepoint_string("dirty+"), page); } else { - priv = afs_page_dirty(from, to); + priv = afs_page_dirty(page, from, to); attach_page_private(page, (void *)priv); - trace_afs_page_dirty(vnode, tracepoint_string("dirty"), - page->index, priv); + trace_afs_page_dirty(vnode, tracepoint_string("dirty"), page); } set_page_dirty(page); @@ -321,7 +318,6 @@ static void afs_pages_written_back(struct afs_vnode *vnode, pgoff_t first, pgoff_t last) { struct pagevec pv; - unsigned long priv; unsigned count, loop; _enter("{%llx:%llu},{%lx-%lx}", @@ -340,9 +336,9 @@ static void afs_pages_written_back(struct afs_vnode *vnode, ASSERTCMP(pv.nr, ==, count); for (loop = 0; loop < count; loop++) { - priv = (unsigned long)detach_page_private(pv.pages[loop]); + detach_page_private(pv.pages[loop]); trace_afs_page_dirty(vnode, tracepoint_string("clear"), - pv.pages[loop]->index, priv); + pv.pages[loop]); end_page_writeback(pv.pages[loop]); } first += count; @@ -516,15 +512,13 @@ static int afs_write_back_from_locked_page(struct address_space *mapping, */ start = primary_page->index; priv = page_private(primary_page); - offset = afs_page_dirty_from(priv); - to = afs_page_dirty_to(priv); - trace_afs_page_dirty(vnode, tracepoint_string("store"), - primary_page->index, priv); + offset = afs_page_dirty_from(primary_page, priv); + to = afs_page_dirty_to(primary_page, priv); + trace_afs_page_dirty(vnode, tracepoint_string("store"), primary_page); WARN_ON(offset == to); if (offset == to) - trace_afs_page_dirty(vnode, tracepoint_string("WARN"), - primary_page->index, priv); + trace_afs_page_dirty(vnode, tracepoint_string("WARN"), primary_page); if (start >= final_page || (to < PAGE_SIZE && !test_bit(AFS_VNODE_NEW_CONTENT, &vnode->flags))) @@ -562,8 +556,8 @@ static int afs_write_back_from_locked_page(struct address_space *mapping, } priv = page_private(page); - f = afs_page_dirty_from(priv); - t = afs_page_dirty_to(priv); + f = afs_page_dirty_from(page, priv); + t = afs_page_dirty_to(page, priv); if (f != 0 && !test_bit(AFS_VNODE_NEW_CONTENT, &vnode->flags)) { unlock_page(page); @@ -571,8 +565,7 @@ static int afs_write_back_from_locked_page(struct address_space *mapping, } to = t; - trace_afs_page_dirty(vnode, tracepoint_string("store+"), - page->index, priv); + trace_afs_page_dirty(vnode, tracepoint_string("store+"), page); if (!clear_page_dirty_for_io(page)) BUG(); @@ -860,14 +853,13 @@ vm_fault_t afs_page_mkwrite(struct vm_fault *vmf) */ wait_on_page_writeback(vmf->page); - priv = afs_page_dirty(0, PAGE_SIZE); + priv = afs_page_dirty(vmf->page, 0, PAGE_SIZE); priv = afs_page_dirty_mmapped(priv); - trace_afs_page_dirty(vnode, tracepoint_string("mkwrite"), - vmf->page->index, priv); if (PagePrivate(vmf->page)) set_page_private(vmf->page, priv); else attach_page_private(vmf->page, (void *)priv); + trace_afs_page_dirty(vnode, tracepoint_string("mkwrite"), vmf->page); file_update_time(file); sb_end_pagefault(inode->i_sb); @@ -920,17 +912,15 @@ int afs_launder_page(struct page *page) f = 0; t = PAGE_SIZE; if (PagePrivate(page)) { - f = afs_page_dirty_from(priv); - t = afs_page_dirty_to(priv); + f = afs_page_dirty_from(page, priv); + t = afs_page_dirty_to(page, priv); } - trace_afs_page_dirty(vnode, tracepoint_string("launder"), - page->index, priv); + trace_afs_page_dirty(vnode, tracepoint_string("launder"), page); ret = afs_store_data(mapping, page->index, page->index, t, f, true); } - priv = (unsigned long)detach_page_private(page); - trace_afs_page_dirty(vnode, tracepoint_string("laundered"), - page->index, priv); + detach_page_private(page); + trace_afs_page_dirty(vnode, tracepoint_string("laundered"), page); return ret; } |