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authorDavid Howells <dhowells@redhat.com>2021-10-20 14:06:34 +0100
committerDavid Howells <dhowells@redhat.com>2022-01-07 13:40:33 +0000
commit16a96bdf92d5af06f9fa6a01a4b08e2fdfed2e5b (patch)
tree656b9af20d052cbd2687e3b1bfbf40d284105fd5 /fs/fscache/internal.h
parent1f67e6d0b18853c641d861a671f46a4964a88510 (diff)
fscache: Provide a function to resize a cookie
Provide a function to change the size of the storage attached to a cookie, to match the size of the file being cached when it's changed by truncate or fallocate: void fscache_resize_cookie(struct fscache_cookie *cookie, loff_t new_size); This acts synchronously and is expected to run under the inode lock of the caller. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> cc: linux-cachefs@redhat.com Link: https://lore.kernel.org/r/163819621839.215744.7895597119803515402.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/163906922387.143852.16394459879816147793.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/163967128998.1823006.10740669081985775576.stgit@warthog.procyon.org.uk/ # v3 Link: https://lore.kernel.org/r/164021527861.640689.3466382085497236267.stgit@warthog.procyon.org.uk/ # v4
Diffstat (limited to 'fs/fscache/internal.h')
-rw-r--r--fs/fscache/internal.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/fscache/internal.h b/fs/fscache/internal.h
index 017bf3d346a4..f121c21590dc 100644
--- a/fs/fscache/internal.h
+++ b/fs/fscache/internal.h
@@ -122,6 +122,9 @@ extern atomic_t fscache_n_relinquishes;
extern atomic_t fscache_n_relinquishes_retire;
extern atomic_t fscache_n_relinquishes_dropped;
+extern atomic_t fscache_n_resizes;
+extern atomic_t fscache_n_resizes_null;
+
static inline void fscache_stat(atomic_t *stat)
{
atomic_inc(stat);