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NFSD: replace __get_free_page() with kmalloc() in nfsd_buffered_readdir()

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nfsd_buffered_readdir() allocates a staging buffer with __get_free_page().

kmalloc() is a better API for such use and it also provides better
scalability and more debugging possibilities.

Replace use of __get_free_page() with kmalloc().

Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Link: https://patch.msgid.link/20260523-b4-fs-v1-7-275e36a83f0e@kernel.org
Acked-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
This commit is contained in:
Mike Rapoport (Microsoft)
2026-05-27 15:12:23 +02:00
committed by Christian Brauner
parent 7c031f1d47
commit 06040e7520
1 changed files with 2 additions and 2 deletions
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fs/nfsd/vfs.c
+2 -2
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@@ -2407,7 +2407,7 @@ static __be32 nfsd_buffered_readdir(struct file *file, struct svc_fh *fhp,
loff_t offset;
struct readdir_data buf = {
.ctx.actor = nfsd_buffered_filldir,
.dirent = (void *)__get_free_page(GFP_KERNEL)
.dirent = kmalloc(PAGE_SIZE, GFP_KERNEL)
};
if (!buf.dirent)
@@ -2458,7 +2458,7 @@ static __be32 nfsd_buffered_readdir(struct file *file, struct svc_fh *fhp,
offset = vfs_llseek(file, 0, SEEK_CUR);
}
free_page((unsigned long)(buf.dirent));
kfree((buf.dirent));
if (host_err)
return nfserrno(host_err);