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Genett" To: Qian Cai , Vlastimil Babka Cc: Hugh Dickins , linux-mm@kvack.org Subject: [PATCH] shmem: make shmem default size a define value Message-ID: <20191009184604.GA5162@spider> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.10.1 (2018-07-13) X-Bogosity: Ham, tests=bogofilter, spamicity=0.000194, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: The default size of the shmem filesystem is currently set to 50% of memory using a magic token. This change makes it a define value, so that it is clearly denoted as a global value, and to make it easier to track down and identify. No behavior is changed, and no additional processing is created. Signed-off-by: Gary B. Genett --- mm/shmem.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/mm/shmem.c b/mm/shmem.c index cd570cc79c76..bc758cfb4cb6 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -95,6 +95,9 @@ static struct vfsmount *shm_mnt; /* Symlink up to this size is kmalloc'ed instead of using a swappable page */ #define SHORT_SYMLINK_LEN 128 +/* Default size of shmem filesystem */ +#define SHMEM_SIZE_DEFAULT (totalram_pages() / 2) + /* * shmem_fallocate communicates with shmem_fault or shmem_writepage via * inode->i_private (with i_mutex making sure that it has only one user at @@ -125,14 +128,14 @@ struct shmem_options { #ifdef CONFIG_TMPFS static unsigned long shmem_default_max_blocks(void) { - return totalram_pages() / 2; + return SHMEM_SIZE_DEFAULT; } static unsigned long shmem_default_max_inodes(void) { unsigned long nr_pages = totalram_pages(); - return min(nr_pages - totalhigh_pages(), nr_pages / 2); + return min(nr_pages - totalhigh_pages(), SHMEM_SIZE_DEFAULT); } #endif -- 2.15.2